Ответ:

№1

1) 2,1(6)=2 (16-1)/90=2 15/90=2 1/6

2) 5,14(33)=5 (1433-14)/9900= 5 1419/9900=5 43/300

3) 0,11(35)=(1135-11)/9900=1124/9900=281/2475

4) 0,214(45)=(21445-214)/99000=21231/99000=2359/11000

№2

1) 5,(3) = 5 3/9 = 5 1/3 и 2,(6) = 2 6/9 = 2 2/3 и 5 1/3 + 2 2/3 = 8

5,(3)+2,(6) = 7,(9) = 8  

2) 7 4/9 - 3 1/9 = 4 1/3

3)  9 4/9 + 4 5/9 = 14

4)  6,(23) = 6 23/99,   3,(6) = 3 6/9 = 3 66/99