Question

(-20) [{(-20) + (-15)} (4) – (8 - 9) (-10)]
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Answer 1

8-9=-1

=-20

=15-4=11

=11--1=12

-20-20=-40

-40±12=-28

-28-10=-38

Answer 2

Answer:

8-9=-1

=-20

=15-4=11

=11--1=12

-20-20=-40

-40±12=-28

-28-10=-38