Răspuns:
( 7/8×4/5+3/4-1/4) ÷ 7/9=
( 7/ 10 +3/4-1/4) ÷7/9=
(14/20 +15/20-5/20) : 7/9=
24/20 ×9/7 =
6/ 5 ×9/7= 54/ 35