3ab - 9ab + 7ab need help

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Wilsonhobbs · Answer 1 · 2019-02-02T17:16:44+0000

Answer:

1ab or just
.

Explanation:

This is a problem where all you have to do is combine like terms.

3ab-9ab+7ab

Subtract
9ab from
3ab first.

3ab - 9ab = -6ab

Then, add
7ab .

-6ab + 7ab = 1ab , or just
.