20×5/6×3/4 2/5×5/6×3/8 2/7×14×5/8 9/10×2/3×5/6怎么计算

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20×5/6×3/42/5×5/6×3/82/7×14×5/89/10×2/3×5/6怎么计算20×5/6×3/42/5×5/6×3/82/7×14×5/89/10×2/3×5/6怎么计算20×5/6

20×5/6×3/4 2/5×5/6×3/8 2/7×14×5/8 9/10×2/3×5/6怎么计算
20×5/6×3/4 2/5×5/6×3/8 2/7×14×5/8 9/10×2/3×5/6怎么计算

20×5/6×3/4 2/5×5/6×3/8 2/7×14×5/8 9/10×2/3×5/6怎么计算
20×5/6×3/4
=(20×5×3)/(6×4)
=25/2
2/5×5/6×3/8
=(2×5×3)/(5×6×8)
=1/8
2/7×14×5/8
=(2×14×5)/(7×8)
=5/2
9/10×2/3×5/6
=(9×2×5)/(10×3×6)
=1/2