Решите: Дробь 5/9+ дробь 1/3+ дробь 2/9+ дробь 1/3
5/9+1/3+2/9+1/3= =5/9+3/9+2/9+3/9= =8/9+5/9= =13/9=1 4/9
5/9+1/3+2/9+1/3=5/9+3/9+2/9+3/9=13/9=2 4/9
1 4/9