Question

3 (a + b)solve ______= b for a c

Answer 1

$\frac{3(a+b)}{c}=b$

First, apply distributive property:

$\frac{3(a)\text{ + 3\lparen b\rparen}}{c}=b$$\frac{3a+3b}{c}=b$$3a+3b=bc$$3a\text{ = bc - 3b}$

Common factor b

$3a=b(c-3)$$a=\frac{b(c-3)}{3}$