Question

5 4/7 +3 6/7
4 2/11 -1 9/11

Answer 1

$5frac47+3frac67=(5+3)+left(frac47+frac67right)=8+frac{10}7=8+1frac37=9frac37\\4frac2{11}-1frac9{11}=3frac{13}{11}-1frac9{11}=(3-1)+left(frac{13}{11}-frac9{11}right)=2+frac4{11}=2frac4{11}$