Question

A)-7+8-3-8=
B)+5-11+5+11=
C)+4-3+40-30+400-300=
D)-40-7-5+2-83+38=
E)-(+27-14)+(-27+14)=

Answer 1

a) -7+8-3-8=

=-18+8=

=-10

b) +5-11+5+11=

=+21-11=

=+10

c) +4-3+40-30+400-300=

=+444-333=

=+111

d) -40-7-5+2-83+38=

=-135+40=

=-95

e) -(+27-14)+(-27+14)=

=-(+13)+(-13)=

=-13-13=

=0