4 3/4-(x-2 5/8)=3 5/6
9 9/28-(4 5/21-x)=6 2/7

1)4,75-x+2,625=3 5/67,375-x=3 5/67 3/8 - 3 5/6=x3 13/24=x2)9 9/28 - 4 5/21 + x=6 2/75 1/12 + x=6 2/7x=1 17/84