Question

Which expression is equivalent to 56x-28y + 42?

a.) 8(7x - 3y + 6). b.) 7(8x + 4y +6z)
c.) 7(8x - 4y + 6)

Answer 1

c.) 7(8x - 4y + 6)

Explanation:

if we solve 7(8x-4y+6), we get;

56x-28y+42

Answer 2

Letter c

Explanation:

You are distributing the 7 to each term in the parentheses.

7(8x) is 56 x

Here is the tricky part. You can think of it a couple of ways:

7(-4y) = -28y a positive times a negative is a negative.

or 7(4y) = 28 , but then remember that you are subtracting so it will become -28

7(6) = 56

56x - 28y +42