Question

Resolva as expressões abaixo valendo 20 pontos!
A)15+[(3.6-2)-(10-6:2)+1]=
B)5-{40-3.[5-(10-7)]}=

Answer 1

15+ [(3.6-2) - (10-6:2)+1] 
15 + [ (18-2) - (10-3) +1]
15+ [16- 7 +1] 
15+ [10] 
15+10 
= 25
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5- {40-3.[5-(10-7)]} =
5-{40-3.[5-3]}
5-{40-3.2}
5-{40-6}
5-34
=-29