Inactive Tutor answered 11/29/16
Tutor
New to Wyzant
Using the rules for PEMDAS (Parenthesis, Exponents, Multiplication, Division, Add, Subtract) you may simplify to:
9 - 3 x = -3 x - 20 or,
-3 (x - 3) = -3 x - 20
No solution exists, however.