43+×=64, 34-х=26;х+45=59;х-53=35

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вопрос

We can solve each of these equations separately:

1) 43 + x = 64
Subtract 43 from both sides:
x = 64 - 43
x = 21

2) 34 - x = 26
Add x to both sides:
34 = 26 + x
Subtract 26 from both sides:
8 = x

3) x + 45 = 59
Subtract 45 from both sides:
x = 59 - 45
x = 14

4) x - 53 = 35
Add 53 to both sides:
x = 35 + 53
x = 88

Therefore, the solutions are:
x = 21, x = 8, x = 14, x = 88