salut!
a) o luam de jos in sus!
e=81:3
e=27
d=27×4
d= 108
c=108+30
c= 138
b=138 : 3
b= 46
a=46+17
a=63
b) e=180:30
e=6
d=162:6
d=27
c=27+17
c=44
b=44×2
b=88
a=154-88
a=66
c)e=9×18
e= 162
d=162:6
d=27
c=27-21
c=6
b=6×5
b=30
a=300:30
a=10
d) a=b×4
b=c:5
c=3×d
d=e:4
e=100
=> d=100:4
d=25
c=25×3
c= 75
b=75:5
b=15
a=15×4
a= 60
Sper ca te am ajutat!
