Question

Expressões :
A) -4+[-3+(-5+9-2)]

B) 25-{-2+[6+(-4-1)]}

C) 15-(3-2)+(7-4)

D) (10-2)-3+(8+7-5)

Answer 1

Expressões :A) -4+[-3+(-5+9-2)] ==> -4+[-3-2]==> - 4 - 5 ==> - 9

B) 25-{-2+[6+(-4-1)]} ==> 25-{-2+[6-5]}==> 25-{-2+1} ==> 25 + 1 ==> 26

C) 15-(3-2)+(7-4) ==> 15 - 1 + 3 ==> 17

D) (10-2)-3+(8+7-5) ==> 8 - 3 + 10 ==> 15