Question

Simplify the following.

1. 32+[(-20)-40]-(-10)

2. 21+[(-7)-35]
​

Answer 1

Answer:

1. 32-20-40+20

32+40-20+20

72-40

32

Answer 2

1.
32 +[(-20)-40]-(-10)
32 +[-60]+10
32-60+10
42-60
-22

2.
21+[(-7)-35]
21+[-42]
21-42
21