Question

How to solve: -8 + square root of (5a-5) = -3

Answer 1

Answer:

$a=6$

Step-by-step explanation:

$-8+\sqrt{(5a-5)}=-3$

Adding 8 both sides.

$8-8+\sqrt{(5a-5)}=-3+8$

$\sqrt{(5a-5)}=5$

Squaring both sides.

$(\sqrt{(5a-5)})^2=5^2$

$5a-5=25$

Adding 5 both side.

$5a-5+5=25+5$

$5a=30$

Dividing by 5 both sides.

$\frac{5a}{5}=\frac{30}{5}$

∴ $a=6$