3 years ago

One of the steps Rob used to solve an equation is shown below.

Mathematics

1 answer:

tankabanditka [31]3 years ago

8 0

Answer:

Step-by-step explanation:

Let's review the distributive property.

It is

a(b+c) = ab + ac

Whenever we have a sum/difference multiplied by a number upfront, we need to eliminate the parenthesis. We do it by multiplying the constant with the terms of the sum/difference inside the parenthesis, each respectively.

Looking at 2 steps, we see Rob:

eliminated the parenthesis by multiplying -5 with both "3x" and "+7"
used the distributive property

From the answer choices, D is right.

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