Question

1-Elimine os parenteses e calcule:

A-+5+(7-3)
B-8-(-2-1)
C--6-(-3+2)
D-18-(-5-2-3)
E-30-(6-1+7)

Answer 1

A)9
B)-11
C)-5
D)-28
E)42

Answer 2

a)5+7-3 = 9
b) 8+2+1=11
c)-6+3-2= -5
d)18+5+2+3=28
e)-30-6+1-7 = 42