Question

Efetue a expressão númericas a seguir 21-(32-25)







44-(4×9-25)-12






61-(54-24÷4)






25-{20+[18-(13-10÷2]}






69-[26+(67-42)]






4+[(55-2×9)-(40÷2+6)]

Answer 1

a)
21-(32-25)=>
21-32+25=>
-11+25=>
14



b)
44-(4×9-25)-12=>
44-(36-25)-12=>
44-11-12=>
33-12=>
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+[18-8]}=>
25-{20+10}=>
25-30=>
- 5


e)
69-[26+(67-42)]=>
69-[26+25]=>
69-51=>
18


f)
4+[(55-2×9)-(40÷2+6)]=>
4+[(55-18)-(20+6)]=>
4+[37-26]=>
4+11=>
15