Question

Calcula
a) 7-4-12 7 (-8)-(-6)
b)-14+15-(-4)+(-8)
c)8-(-9)+(-5)-7-(+4)
d)19+(-3)+2-11+(-3)

Answer 1

7-4-12+7-8+6

-24+20=4

b)-14+15+4-8

-22+19=-3

c)8+9-5-7-4

+17-16=+1

d)19-3+2-11-3

-17+21=+4