Question

How do you solve: 4/10y+28=0

Answer 1

y = -70

Explanation:

`(4)/(10)y+28=0\qquad\text{subtract 28 from both sides}\\\\(4:2)/(10:2)y=-28\\\\(2)/(5)y=-28\qquad\text{multiply both sides by 5}\\\\5\!\!\!\!\diagup^1\cdot(2)/(5\!\!\!\!\diagup_1)y=-140\\\\2y=-140\qquad\text{divide both sides by 2}\\\\y=-70`