Question

Решите уравнения:
(5х+2х)•14=294
(12у-5у):4=21

Answer 1

7x=294:14
7x=21
x=21:7
x=3
проверка
(15+16*14=294
21*14=294
294=294

Answer 2

(12y-5y)/4=21 7y=21*4 y=84:7 y=12

Answer 3

(5x+2x)•14=294
7x=294:14
7x=21
x=21:7
x=3
(12y-5y):4=21
7y:4=21
7y=21•4
7y=84
y=84:7
y=12