Question

Помогите
4х + 5 = 25; (29-у)·7=42; (х+17):3=20; 654 – (453 + x) = 102;

Answer 1

Ответ:

1) x = 5 ; 2) y = 23 ; 3) x = 43; 4) x = 99

Пошаговое объяснение:

1) 4x + 5 = 25

 4x = 25-5

4x =20

x = 20:4

x =5

2) (29-y)•7 = 42

29-y = 42:7

29-y=6

y = 29-6

y = 23

3) (x+17):3= 20

x+17 = 20•3

x+17 = 60

x = 60-17

x = 43

4) 654 - (453+x) = 102

453+x = 654 - 102

453+x = 552

x = 552 - 453

x = 99

Answer 2

1. х=5
2. у=23
3. х=43
4.х=99