From the given equations, you have -2 + 3C = -(2 - 4C) Simplify and find C -2 + 3C = -2 + 4C 3C = 4C 4C - 3C = 0 C = 0 Now, substitute C= 0 into the first equation and find -2 + 3*0 = a -2 = a. ANSWER. a = -2; C = 0.