Question

7ab+(-3ab)+(-3/2ab)+(-ab)

Answer 1

Answer:

(3/2)ab

Step-by-step explanation:

Adding variables is like adding animals.  You can add two zebras and three zebras to get five zebras, but two zebras and 3 giraffes is still just two zebras and three giraffes.

So:

7ab - 3ab - 3/2ab - ab

=4ab - 3/2ab -ab

=3ab - 3/2ab

=(3/2)ab or 1.5ab

Answer 2

Step-by-step explanation:

7ab-3ab-(3/2ab)-ab

= 14ab/2-6ab/2-3ab/2-2ab/2

=3ab/2