Question

Calcule as seguintes operaçoes:

Answer 1

A) -3-5-8+12 = -4

B) 15-[3-22]
     15-19 = -4

C) 20-{6-[-1-3-2}}
     20-{6+6}
     20-12=8

D)-4-{-2+3+[-2-18]}
     -4-{-2+3-20}
     -4+19= 15