Question

calcule
a) (9-4) - (+9) - (-86) =
b)+90 -8 -7 -90 -3 +6 +4 =
c)-8 - (-9) + (-6) =
d) -1 -1 -2 -3 =
e) -9 × (-4) =
g) (-10)² =

Answer 1

a.5-9+86=-4+86=86-4=82
b.-15-3+10=-18+10=-8
c.-8+9-6=-5
d.-7
e.36
f.100