Question

Simplify -7(4r -3) A) -28r + 21 B) -28r -10 C) -28r - 21 D) -3r -10

Answer 1

Answer:

A) -28r + 21

Step-by-step explanation:

-7(4r -3)

Distribute the -7

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

-28r +21

Answer 2

For this case we must simplify the following expression:

$-7 (4r-3)$

We apply distributive property to the terms within the parenthesis taking into account that $- * + = -$ and $- * - = +$.

The distributive property states that:

$a (b + c) = ab + ac$

So:

$-28r + 21$

Answer:

$-28r + 21$

Option A