7 целых 5/21 * У=6 целых 18/21

Question

7 целых 5/21 * У=6 целых 18/21

Answer 1

7 5/21×у=6 18/21
у=6 18/21÷7 5/21
у=6 6/7÷7 5/21
у= 48/7÷152/21
у=48/7×21/152
у=6/1×3/19
у=18/19

Answer 2

У=(72+18)/12*21/(147+5)
у=90/12*21/152=315/304=1целая11/304