Question

Решите уравнение: 3/5a+2/3a=3целых 4/5

Answer 1

(9+10)/15a=19/5
19/15a=19/5
a=19/5*15/19
a=3

Answer 2

9/15а+10/15а=19\5
19/15а=19/5
а=19/5:19/15=19/5*15/19
а=3