Question

John was given the equation 5(x - 2) - 2(7-5) = 9 to solve. Some of the steps and their reasons have already beencompleted. State a property of numbers for each missing reason.5(x - 2)-2(x - 5) = 9(1) 5x - 10 - 2x + 10 = 9(1)(2) 5x - 2x - 10+ 10 = 9(2)3x + 0 = 93x = 9x = 3

Answer 1

(1) is due to the distributive property of the multiplication over the addition of numbers .

(2) is due to the commutative property of the addition of numbers.