Collect all the terms with x on the right side and combine like terms. Collect all the constant terms on the left side and combine like terms. You will get then -10 + 13 - 42 = x^2 - x^2 + 11x- 2x + 17x -39 = 26x Divide both sides by 26. You will get x = -39/26 = -3/2. ANSWER