koslund013 koslund013 10-12-2018 Mathematics contestada Please help! Question 10) 4x + 5x + 12 = -6 (given) 9x + 12 = -6 (simplify) 9x = - 18 (subtraction) x = -2 (addition) Which reason is incorrect? A) Addition B) given C) simplify D) subtraction