Question

 -3(3y+4)+4(2y+3)=15​

Answer 1

-3 ( 3y + 4 ) + 4 ( 2y + 3 ) = 15​

-9y - 12 + 8y + 12 = 15

-9y + 8y = 15

-y = 15

y = -15

Answer 2

Ответ:

$y=-15$

Пошаговое объяснение:

$-3cdotBig(3cdot y+4Big)+4cdotBig(2cdot y+3Big)=15\\-3cdot3cdot y-3cdot4+4cdot2cdot y+4cdot3=15\\-9cdot y-12+8cdot y+12=15\\Big(-9cdot y+8cdot yBig)+Big(-12+12Big)=15\ \Big(-(9cdot y- 8cdot y)Big)+Big(-(12-12)Big)=15\\ Big(-(1y)Big)=15\\-1y=15\\ y=15 : Big(-1Big)\\y=-15$