Răspuns :
m=Maria
b=Bogdan
m=5*b
m=36+b
5b=36+b
4b=36
b=36:4
b=9 lei
m=5*9
m=45 lei
b=Bogdan
m=5*b
m=36+b
5b=36+b
4b=36
b=36:4
b=9 lei
m=5*9
m=45 lei
Bogdan x, Maria 5x
x+5x=36
6x=36 | :6
x=6
Bogdan 6 lei
Maria 5×6=30 lei
x+5x=36
6x=36 | :6
x=6
Bogdan 6 lei
Maria 5×6=30 lei