Question

7) Calcule as expressões:
1
a) 20 +{ [ 7+ 5+ (-9 + 7) +3]} =
b) 10-{-2 + [ +1 + ( +7 - 3) - 2] + 6 ) =
c) (-12 + 25) - {-2-[- (+ 2) × (- 10 + 5)]} =
d) (+ 5 - 4) * (- 12 + (- 5+15) = (+ 1 - 3)] =​

Answer 1

Resp. a) 33

Resp. b) 3

Resp. c) 25

Resp. d) 4