Question

If -2(3y+5)=-4, find the value of 5y

Answer 1

$-2(3y+5)=-4\\\\-6y-10=-4\ \ \ \ \ |add\ 10\ to\ both\ sides\\\\-6y=6\ \ \ \ \ \ |divide\ both\ sides\ by\ (-6)\\\\\boxed{y=-1}$

Answer 2

$-2(3y+5)=-4\\ -6y-10=-4\\ -6y=6\\y=-1\\\\ 5y=5\cdot(-1)=-5$