Question

d) (-3). (+9)- (-24)=
e) 5. (-8) - 3. (+10)+63=
f) 20-2. (-17) + (-12). (+4)

Answer 1

d)(-3).(+9)-(-24)=
-3.(+9)+24=
-27+24=-3
e)5.(-8)-3.(+10)+63=
-40-30+63=
-70+63=-7
f)20-2.(-17)+(-12).(+4)=
20+34+(-48)=
20+34-48=
54-48=6