Question

(20p) 4.Efectuati:
a)(-8+3)+(-15+12)=
b)(-38+64)-(+27-93)=
c)-36+(-5).(-7)=
d)(+105):(-5)-(-64):(+8)=
VA ROG REPEDE DAU COROANA​

Answer 1

Răspuns:

a) (-8+3)+(-15+12)=(-5)+(-3)=-5-3=-8

b) (-38+64)-(+27-93)=(+26)-(-66)=+26+66=92

c) -36 +(-5)•(-7)=-36+(-35)=-36-35=-71

d) (-105):(-5)-(-64):(+8)=-21-(-8)=-21+8=-13