Question

тендеуди шеш

5у+7(3-у)=3(5-2у)-6

Answer 1

5у+7(3-у)=3(5-2у)-6
5y+21-7y=15-6y-21
5y-7y+6y=15-6-21
4y= -12
y= -12:4
y= -3
Ответ: -3

Answer 2

5y+21-7y=15-6y-6
-2y+6y=-21+15-6
4y=-12
y=-3