Question

7th grade math help @iGreen

Answer 1

What is the value of b?
–7b = –42

Answer 2

Okay, we want to get rid of the -7 that's being multiplied with \(b\). So what are we going to do to both sides?

Answer 3

multiplying???

Answer 4

No it's BEING multiplied by \(b\).

To keep the balance you have to do the opposite..and what's the opposite of multiplying?

Answer 5

is the answer -6 because 7-*6- = -42:)

Answer 6

Almost.

\(-7b = -42\)

You have to DIVIDE -7 to both sides, because it's being MULTIPLIED. And dividing is the OPPOSITE of multiplying.

When you divide -7 to both sides:

\(\dfrac{-7b}{-7} = \dfrac{-42}{-7}\)

Dividing \(-7 \div -7\) will give you 1, so \(b\) will be by itself.

Dividing \(-42 \div -7\) will give you 6, so 6 will be by itself on the other side.

So we have \(b = 6\)