
- - $ 40 - $ 60 + $120 - $ 90 + $70 = ?

Let's solve it first by removing the dollar symbol (you should add it at the final answer though).


Subtract 60 from -40 to get -100.

Add -100 and 120 to get 20.

Subtract 90 from 20 to get -70.

Add -70 and 70 to get 0.

- The correct answer is $ 0.