Question

calcule o valor das expressões. a) 12-(-3)+(-1)-(-7)=
b)-5+(-2)-6-(-8)=
c)(-4+7-1)-(-2-4-6)=
d)(7-10)+(10-7)-(-10-7)=​

Answer 1

Resposta:

a) 12-(-3)+(-1)-(-7) = 21.

b) -5+(-2)-6-(-8) = -5.

c) (-4+7-1)-(-2-4-6) = 14.

d) (7-10)+(10-7)-(-10-7) = -3.