Question

100-40+10-100-20+20-+10

Answer 1

-40 because - and + 10 cancel out. 100-100 cancel out. That leaves -40-20+20 and -20 +20 cancel out

Answer 2

-40

Explanation:

100-40+10-100-20+20-(+10)

=60+10-100-20+20-10

=70-100-20+20-10

=-30-20+20-10

=-50+20-10

=-30-10

=-40