Question

Simplify like terms
1. 3a-2b-ab-(a-b+ab)+3ab+b-a

Answer 1

3a-2b-ab-(a-b+ab)+3ab+b-a

3a-2b-ab-a+b-ab+3ab+b-a
take same terms like this
3a-a-a -2b+b+b -ab-ab+3ab
3a-a-a=a
-2b+b+b=0
-ab-ab+3ab= -2ab+3ab=ab
=a+0+ab
=a+ab
=a(1+b)

Answer 2

=3a-2b-ab-a+b-ab+3ab+b-a
=(3a-a-a)+(-2b+b+b)+(-ab-ab+3ab)
=a+0+ab
=a+ab
=a(1+b)