Question

Elimine os parênteses e calcule:
A)(+3)-(-2)-(+1)
B)(-7)-(+2)+(-4)
C)10+4-(+6)
D)(-8)+(-6)-7

Answer 1

a) 3+2-1=4

b) -7-2-4=-13

c) 10+4-6=8

d) -8-6-7=-21