morriceroa150 morriceroa150 25-03-2020 Mathematics contestada 2(x + 7) + 3x = 12 (given) 2x + 14 + 3x = 12 (?) 5x + 14 = 12 (simplify) 5x = -2 (subtraction) x = - 2 5 (division) What is the missing reason?