Răspuns :
a/3 + a/2 = 100 / x 6
2a + 3a = 600
5a = 600
a = 600 :5
a = 120
120 : 3 + 120 : 2 = 40 + 60 = 100
2a + 3a = 600
5a = 600
a = 600 :5
a = 120
120 : 3 + 120 : 2 = 40 + 60 = 100