Răspuns :
Prin segmente
m+t+c= 90
c _
m___
t___6
90-6=84
c x7=84
c=12
m=12 x 3
m= 36
t= 36+6
t= 42
R: mama= 36 ani ,Corina= 12 ani , tata=42 ani
m+t+c= 90
c _
m___
t___6
90-6=84
c x7=84
c=12
m=12 x 3
m= 36
t= 36+6
t= 42
R: mama= 36 ani ,Corina= 12 ani , tata=42 ani
m+t+c=90
c=m/3
t=m+6
=> m+6+m+m/3=90 | -6
=> 2m+m/3=84 |*3
=> 6m+m=252 | :7
=> m=252:7=36
c=/3=36/3=12
t=m+6=36+6=42
c=m/3
t=m+6
=> m+6+m+m/3=90 | -6
=> 2m+m/3=84 |*3
=> 6m+m=252 | :7
=> m=252:7=36
c=/3=36/3=12
t=m+6=36+6=42