Question

4*. Calculați:
a)-7 + (-2).(-3);
c)-2. (+3) -9;
e)-10-(-3) +(-7);
5* Colouloti
b) -10 + (-12): (+3);
d) (-24):(+8) -7;
1) +28 :(-7)+7.

Answer 1

Răspuns:

-7+(-2)×(-3)=-7+(+6)=-7+6=-1

-2×(+3)-9=-6-9=-15

-10-(-3)+(-7)=-10+3-7=-7-7=-14

-10+(-12):(+3)=-10+(-4)=-10+4=-6

(-24):(-8)-7=+3-7=-4

+28:(-7)+7=-4+7=+3