Question

2,9y-4(1,2-y)=5,4(y+2)

Answer 1

Ответ:

$2.9y - 4(1.2 - y) = 5.4(y + 2) \\ 2.9y - 4.8 + 4y = 5.4y + 10.8 \\ 2.9y + 4y - 5.4y = 10.8 + 4.8 \\ 1.5y = 15.6 \\ y = 15.6 \div 1.5 \\ y = 10.4$

Answer 2

Ответ:

2,9у-4(1,2-у)=5,4(у+2)

2,9у-4,8+4у=5,4у+10,8

6,9у-4,8=5,4у+10,8

6,9у-5,4у=10,8+4,8

1,5у=15,6

у=10,4