Question

A-21-(32- 25)=
B-44-(4×9-25)-12=
C-61-(54-24÷4)=
D-25-{20+[18-(13+10÷2]}
E-69[26+(6 -42)]=
F-4+[55-2×9)-(40÷2+6)]

Answer 1

A) 21-(32- 25)=
21-7=
14

B) 44-(4×9-25)-12=
44-(36-25)-12=
44-11-12=
21

C) 61-(54-24÷4)=
61-(54-6)=
61-48=
13

D) 25-{20+[18-(13+10÷2]}=
25-{20+[18-(13+5]}=
25-{20+[18-18]}=
25-20=
5

E) 69[26+(6 -42)]= 
69[26-36]=
 69.(-10)=
 -610

F) 4+[55-2×9)-(40÷2+6)]= 
4+[(37)-(26)] =
 4+11=
 15

Espero ter ajudado e bons estudos!