Question

What is the value of m in the following equation?

$3m+20=5m+2$

• A. 4
• B. 9
• C. 8
• D. 2

Answer 1

The correct option is B

9

$3m+20=5m+2$

Subtracting 2 from both sides.

$3m+20-2=5m+2-2$

$3m+18=5m$

Subtracting 3m from both sides,

$3m+18-3m=5m-3m$

$18=2m$

dividing by 2 on both sides,

$\frac{18}{2}=\frac{2m}{2}$

$9=m$