Question

Calculati:
a)(-2+9-9)-(-3-8+2)=?
b)(+34):(-2)-(-35):(-7)=?
c)(-475):(+25)-(+64).(-2)=?
d)(+48):(-2la puterea a 4)=?

Answer 1

a. [7-9]-[-11+2]
⇒[-2]-[-9]
⇒[-2]+9=7;
b. [-17]-5=-22;
c. [-19]-[-32]
⇒[-19]+32=13;
d. 48/[-16]=-3;