478.
- Ні
- Так
- Ні
- Так
479.
1) 2x = 27 - 17
2x = 10
x = 5
2) (13 - x) = 48 - 42
(13 - x) = 6
x = 13 - 6
x = 7
480.
1) 63 : x = 7 + 2
63 : x = 9
x = 63 : 9
x = 7
2) 15 - x - 3 = 9
12 - x = 9
x = 12 - 9
x = 3
481.
1) x = 4597 - 2571
x = 2026
2) y = 21 456 - 17 392
y = 4064
3) z = 37 897 + 52 142
z = 90 039
4) m = 42 562 - 37 985
m = 4577
482.
1) x = 17 700 - 12 605
x = 5095
2) y = 47 002 - 31 409
y = 16 593
3) k = 45 497 + 15 391
k = 60 888
4) p = 12 398 - 4597
p = 7801
483.
1) m = 38 111 - 27 311
m = 10 800
2) k = 99 191 + 25 372
k = 124 563
484.
1) a = 43 342 - 32 115
a = 11 227
2) b = 105 394 + 12 372
b = 117 766
485.
1) x = 9345 - 6782
x = 2563
2) y = 9345 - 2563
y = 6782
3) m = 9345 - 2563
m = 6782
4) k = 9345 - 6782
k = 2563
486.
1) x = 2475 + 4463
x = 6938
2) y = 6938 - 2475
y = 4463
487.
1) x = 432 : 12
x = 36
2) x = 8008 : 22
x = 364
3) x = 0 : 16
x = 0
4) x = 38 • 27
x = 1026
5) x = 0 • 192
x = 0
6) x = 912 : 24
x = 38
488.
1) x = 560 : 16
x = 35
2) x = 1692 : 36
x = 47
3) x = 182 • 12
x = 2184
4) x = 7936 : 31
x = 256
489.
- 35
- 128
- x = 128
- y = 35
- a = 4480
- m = 4480
- k = 128
- p = 35
490.
- 26
- 6370
- x = 6370
- y = 6370
- t = 26
- m = 245
- p = 245
- a = 26
491.
5x = 5245
x = 5245 : 5
x = 1049
2y = 1652
y = 1652 : 2
y = 826
x + y = 1049 + 826 = 1875
492.
4x = 7516
x = 7516 : 4
x = 1879
6y = 444
y = 444 : 6
y = 74
x - y = 1879 - 74 = 1805
493.
1) x + 25 = 72
x = 72 - 25
x = 47 - грибів у кошику було спочатку
2) x + 8 = 11
x = 8 + 11
x = 19 - тістечок було на таці спочатку
3) 198 - x = 169
x = 198 - 169
x = 29 - дітей пішло в похід
494.
1) x + 7 = 18
x = 18 - 7
x = 11 - років Сергію зараз
2) 290 - х = 212
х = 290 - 212
х = 78 - кг фруктів відвантажили для дитячого садка
495.
x = 190 - 85
x = 105 км
496.
1) x + 492 = 839 + 798
x + 492 = 1637
x = 1637 - 492
x = 1145
2) x - 792 = 1392 - 297
x - 792 = 1095
x = 1095 + 792
x = 1887
3) x - 5342 = 9159 + 4132
x - 5342 = 13 291
x = 13 291 + 5342
x = 18 633
4) 343 + x = 973 - 297
343 + x = 676
x = 676 - 343
x = 333
5) x - 732 = 1952 - 1713
x - 732 = 239
x = 239 + 732
x = 971
6) 1795 - x = 2372 - 1052
1795 - x = 1320
x = 1795 - 1320
x = 475
497.
1) x + 4537 = 11 342 - 5297
x + 4537 = 6045
x = 6045 - 4537
x = 1058
2) x + 4792 = 6397 + 539
x + 4792 = 6936
x = 6936 - 4792
x = 2144
3) x - 8397 = 1792 + 5372
x - 8397 = 7164
x = 7164 + 8397
x = 15 561
4) 5392 - x = 10 397 - 9797
5392 - x = 600
x = 5392 - 600
x = 4792
5) x + 4127 = 5372 - 973
x + 4172 = 4399
x = 4399 - 4127
x = 272
6) 5973 - x = 8374 - 4392
5973 - x = 3982
x = 5973 - 3982
x = 1991
498.
1) y + 7392 = 16 292 - 4597
y + 7392 = 11 695
y = 11 695 - 7392
y = 4303
2) 7592 - x = 8915 - 5297
7592 - x = 3618
x = 7592 - 3618
x = 3974
499.
1) y - 59 792 = 47 594 - 12 397
y - 59 792 = 35 197
y = 59 792 + 35 197
y = 94 989
2) a - 15 142 = 12 137 - 8372
a - 15 142 = 3765
a = 15 142 + 3765
a = 18 907
500.
1) 27x + 7 = 169
27x = 169 - 7
27x = 162
x = 162 : 27
x = 6
2) 6y - 13 = 131
6y = 131 + 13
6y = 144
y = 144 : 6
y = 24
501.
1) x + 26 = 360 : 12
x + 26 = 30
x = 30 - 26
x = 4
2) x - 15 = 1841 : 7
x - 15 = 263
x = 263 + 15
x = 278
3) 132 - x = 23 • 4
132 - x = 92
x = 132 - 92
x = 40
4) x + 11 = 910 : 35
x + 11 = 26
x = 26 - 11
x = 15
5) 2x + 27 = 405 : 5
2x + 27 = 81
2x = 81 - 27
2x = 54
x = 54 : 2
x = 27
6) 7x = 252 • 2
7x = 504
x = 504 : 7
x = 72
502.
1) 4x + 5 = 25
4x = 25 - 5
4x = 20
x = 20 : 4
x = 5
2) y - 12 = 1260 : 36
y - 12 = 35
y = 35 + 12
y = 47
3) 13 + x = 851 : 37
13 + x = 23
x = 23 - 13
x = 10
4) x - 12 = 82 • 12
x - 12 = 1066
x = 1066 + 12
x = 1078
503.
1) x + 72 - 48 = 179
x + 72 = 179 - 48
x + 72 = 227
x = 227 - 72
x = 155
2) x - 42 + 37 = 40
x - 42 = 40 - 37
x - 42 = 3
x = 42 + 3
x = 45
504.
80 - x - 24 = 36
80 - x = 24 + 36
80 - x = 60
x = 80 - 60
x = 20
505.
1) 108x = 648
x = 648 : 108
x = 6
2) 182x = 910
x = 910 : 182
x = 5
3) 6x = 294
x = 294 : 6
x = 49
4)1400x = 1400
x = 1400 : 1400
x = 1
506.
1) 36x = 180
x = 180 : 36
x = 5
2) 205 : x = 78 - 37
205 : x = 41
x = 205 : 41
x = 5
507.
1) 104x = 312
x = 312 : 104
x = 3
2) 12x = 72 • 5
12x = 360
x = 360 : 12
x = 30
3) 5x = 42 - 12
5x = 30
x = 30 : 5
x = 6
4) x : 5 = 42 + 23
x : 5 = 65
x = 65 • 5
x = 325
508.
1) 2x + 2 = 16
2x = 16 - 2
2x = 14
x = 14 : 2
x = 7
2) 3x + 4 = 22
3x = 22 - 4
3x = 18
x = 18 : 3
x = 6
509.
1) x = 37
37 + a - 12 = 25
37 + a = 25 + 12
37 + a = 37
a = 37 - 37
a = 0
2) x = 53
a - 53 + 42 = 83
a - 53 = 83 - 42
a - 53 = 41
a = 53 + 41
a = 94
510.
x = 27
27 - a + 37 = 52
27 - a = 52 - 37
27 - a = 15
a = 27 - 15
a = 12
511.
1) x - 457 = 2942
x = 2942 + 457
x = 3399
y + 3189 = 7213
y = 7213 - 3189
y = 4024
4567 - z = 2966
z = 4567 - 2966
z - 1601
Відповідь: x + z = 500
2) 2547 + x = 2619
x = 2619 - 2547
x = 72
z - 379 = 492
z = 492 + 379
z = 871
5412 - y = 4893
y = 5412 - 4893
y = 519
Відповідь: x + z < 1395; x - y < 12
512.
x сторінок за другий день
2х сторінок за перший день
х + 2х = 90
3х = 90
х = 90 : 3
х = 30 стр - за 1 день
2х = 2 • 30 = 60 стр - за 2 день
513.
x - задумане число
x : 5 - 27 = 13
x : 5 = 13 + 27
x : 5 = 40
x = 40 • 5
x = 200
514.
1) x + x + 15 = 117
2x = 117 - 15
2x = 102
x = 51
2) x + 5x = 282
6x = 282
x = 282 : 6
x = 47
515.
- 450 : 2 = 225 (км/год) - шв. гелікоптера;
- 225 • 2 = 450 (км/год) - шв. літака;
- 450 • 3 - 225 : 4 = 450 (км) - на стільки більше пролетить літак.
516.
Перший доданок - 975, другий доданок - 257, третій доданок - 7 592 - 975 + 257 = 6 360.
517.
1500 : 3 = 500 грн - відклав на геймпад.
518.
КОКА + КОЛА = ВОДА
3930 + 3980 = 7910