Question

Which expression is equivalent to 12x-3x

A. x(12-3)
B. 8x
C. 3 (3x-x)
D. 9
{Special Instructions}
Please leave an explanation to how you found your answer.

Answer 1

A

Because 12-3=9. Then, you’re going to multiply the x to the 9 making it 9x. Which is the same as 12x-3x since that’s also 9x

Answer 2

b. 8x

Explanation:

its easy because the unknowns are equal then you just do the subtraction