Tony solves the linear equation 3 (x - 3) + 2x + 9 = 2x + 2 (x - 1) using the step shown below.

Step 1: 3x - 3 + 2x + 9 = 2x + 2x - 1

Step 2: 5x + 6 = 4x - 1

Step 3: 5x - 4x = - 1 - 6

Step 4: x = - 7

a. He incorrectly combined like terms.

b He incorrectly applied the addition and subtraction properties of equality.

c He incorrectly applied the multiplication and division properties of equality.

d He distributed incorrectly.

Question

Mathematics

Valeria Dougherty

25 December, 04:06

Tony solves the linear equation 3 (x - 3) + 2x + 9 = 2x + 2 (x - 1) using the step shown below.

Step 1: 3x - 3 + 2x + 9 = 2x + 2x - 1

Step 2: 5x + 6 = 4x - 1

Step 3: 5x - 4x = - 1 - 6

Step 4: x = - 7

a. He incorrectly combined like terms.

b He incorrectly applied the addition and subtraction properties of equality.

c He incorrectly applied the multiplication and division properties of equality.

d He distributed incorrectly.

+4

Answers (1)

Know the Answer?

Eva Morse · Answer 1

D.)

Step-by-step explanation:

because when you have numbers inside the parentheses, you have to multiply both of those numbers by the number to the right of the parentheses, not just the X.