Question

A = 2/3 * (B + C)
Solve for C

Answer 1

Simplify 2/3(b+c) to 2(b+c)/3
a=2(b+c)/3

Multiply both sides by 3
a * 3 = 2(b+c)

Regroup terms
3a=2(b+c)

Divide both sides by 2
3a/2 = b+c

Subtract c from both sides
3a/2 - c = b

Switch sides
b = 3a/2 - c