Question

Does 3 (x-1) = 2x + 9 have one solution, no solution, or infinite solutions?

Answer 1

Explanation:

3x-3=2x+9

3x-2x=9+3

x=12

only one solution

Answer 2

one solution

x = 12

Explanation:

3 (x-1) = 2x + 9

3x - 3 = 2x + 9

subtract 2x from each side of the equation:

x - 3 = 9

add 3 to each side:

x = 12