Răspuns :
A = ALINA
R = RALUCA
A + R = 20
A = 3R
3R+R = 20
4R=20
R=20:4
R=5 (RALUCA)
A+5=20
A= 20-5=15 (ALINA)
R = RALUCA
A + R = 20
A = 3R
3R+R = 20
4R=20
R=20:4
R=5 (RALUCA)
A+5=20
A= 20-5=15 (ALINA)