Simplify -7(4r -3)
a) -28r + 21
b) -28r -10
c) -28r - 21
d) -3r -10

A) -28r + 21

Step-by-step explanation:

-7(4r -3)

Distribute the -7

-7*4r -7*(-3)

-28r +21

For this case we must simplify the following expression:

We apply distributive property to the terms within the parenthesis taking into account that and .

The distributive property states that:

So:

Option A

10/15 - 9/15, I believe is the answer