Question

What value of x makes this equation true?
12x - 15 = 6 - 3x

Answer 1

7/5

Explanation:

Isolate x

12x-15=6-3x

12x-15+15=6-3x+15 (add fifteen, addition property of equality)

12x=6-3x+15

12x=21-3x (combine like terms)

12x+3x=21-3x+3x (add 3x, addition property of equality)

15x=21 (combine like terms)

15x/15=21/15 (divide by 15, division property of equality)

x=7/5 (simplify)