1)7 7/11 *3 2/5+7 7/11* 7 3/5,2)8 3/5*6 1/7 -1 1/7 *8 3/5, 3)10 5/11* 4 1/3 +10 5/11*6 2/3

1) 7 7/11 *3 2/5+7 7/11* 7 3/5 =  по действиям
 84/11 * 17/5 = 1428/55
 84/11 * 38/5 = 3192/55
1428/55 + 3192/55 =  4620/55 =  84

2)8 3/5*6 1/7 -1 1/7 *8 3/5 = 
 43/5 * 43/7 = 1849/35
 8/7 * 43/5 = 344/35
1849/35 -344/35 =  1505/35 = 43

3)10 5/11* 4 1/3 +10 5/11*6 2/3  = 
115/11 * 13/3 = 1495/33
 115/11 *20/3 = 2300/33
1495/33 + 2300/33 = 3795/33 = 115
   

1)7 7/11 *3 2/5+7 7/11* 7 3/5 = 7 7/11*(3 2/3+7 3/5)=84/11*(17/5+38/5)= 84/11*55/5=84
2)8 3/5*6 1/7 -1 1/7 *8 3/5= 8 3/5*(6 1/7-1 1/7)=43/5*(43/7-8/7)=43/5*35/7=43
3)10 5/11* 4 1/3 +10 5/11*6 2/3= 10 5/11*(4 1/3+6 2/3)=115/11*(13/3+20/3)=115/11*33/3=115