Срочно!!!
4 5/12+ 1 1/12:(6 5/8- 3 1/12)* 4 1/6

По действиям

4 5/12+1 1/12:(6 5/8 -3 1/12)×4 1/6=5/3+1/12:(3× 5/4-1/4)×4×1/6=5/3+1/12:(15/4-1/4)+4+1/6=5/3 + 1/12: 15-1/4 ×4× 1/6=5/3+1/12:14/4 ×4×1/6=5/3+1/12×4/14 +4×1/6=5/3+1/12×1/7 ×2×1/6=5/3+1/3×1/7 ×1/3=5/3+1/63=105+1÷63=106/63=1 43/63

надеюсь понятно?