Question

7y−2(−y−9)=−8(−4y−7)

Answer 1

Resposta:

7y - 2·( - y - 9) = - 8 (-4y - 7)
7y + 2y + 18 = 32y + 56
9y + 18 = 32y + 56
9y - 32y = 56 - 18
- 23y = 38

y = $-\frac{38}{23}$ ou y = -1,65