Question

A) minus 7 plus (minus 5plus 5) b) minus 4 plus (4 minus 8) c) minus 4509plus 2315 plus 4509 d) 123minus (117minus 0) plus ( minus 123) plus 118

Answer 1

a)-7+(-5+5)=
-7+0=
-7

b)-4+(4-8)=
-4+(-4)=
-4-4=
-8

c)-4509+2315+4509=
2315-0=
2315

d)123-(117-0)+(-123)+118=
123-117+(-123)+118=
6+(-123)+118=
6-123+118=
-117+118=
1