Question

ajutati.ma va rog reped3

Answer 1

a=varsta mamei
b=varsta Alexandrei
b=a:5 deci a=b*5
a+8=(b+8)*3
b*5+8=b*3+24
b*2=16
b=8
a=5*8=40

Answer 2

fie A varsta Alexandrei si m varsta mamei 
1/5m=A
m+8=3(A+8)
m+8= 3(1/5m+8)
m+8=3m/5+24
2m/5=16
2m=80
m=40
A=40/5=8