53又1/3×3/5-42又2/3×3/8+36又3/4×4/7这道题怎么做

53又1/3×3/5-42又2/3×3/8+36又3/4×4/7这道题怎么做
53又1/3×3/5-42又2/3×3/8+36又3/4×4/7这道题怎么做

53又1/3×3/5-42又2/3×3/8+36又3/4×4/7这道题怎么做
化成假分数
160/3×3/5-128/3×3/8+147/4×4/7
=32-16+21
=37

32-16+21=37

53又1/3×3/5-42又2/3×3/8+36又3/4×4/7
=160/3×3/5-128/3×3/8+147/4×4/7
=32-16+21
=37

53X1/3X3/5-42X2/3X3/8+36X3/4X4/7
=53X1/5-42X1/4+36X3/7
=10.6-10.5+36又3/7
=？？？？
我也不会了。