Question

1)calcule o valor das seguintes expressoes :
a) 15-(3-2)+(7+4)

b)- {-2-[-3-(-5)+1]}

c)-20- {-4-[-8+(+12-6-2)+2+3]}

d)15+[-4-(-2+7)}
POR FAVOR  PRECISO DAS  CONTAS MONTADAS :(

Answer 1

a)15-(3-2)+(7+4)
15-(1)+(11)
15+11-1
25

b)-{-2-[-3-(-5)+1]}
-{-2-[-3+5+1]}
-{-2-[3]}
-{-2-3}
-{-5}
5

c)-20-{-4-[-8+(+12-6-2)+2+3]}
-20-{-4-[-8+(4)+2+3]}
-20-{-4-[1]}
-20-{-4-1}
-20-{-5}
-20+5
-15

d)15+[-4-(-2+7)]
15+[-4-(5)]
15+[-4-5]
15+[-9]
6