Question

Which expression is equivalent to -3 ( x - y )?

A. -3x + y
B. -3x - y
C. -3x - 3y
D. -3x + 3y

I already know it’s not A or B

Answer 1

D. -3x+3y

Explanation:

Start by distributing the -3 to each term in the parentheses:

-3(x)+(-3)(-y)

Here are some multiplication sign rules that will make this problem easier:

- - make a +

- + make a -

+ - make a -

+ + make a +

-3x+3y (note that since both 3 and y are negative, they make a positive)