73.6-13.6×21.5÷4怎样简便怎样计算

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73.6-13.6×21.5÷4怎样简便怎样计算73.6-13.6×21.5÷4怎样简便怎样计算73.6-13.6×21.5÷4怎样简便怎样计算73.6-13.6×21.5÷4=73.6-13.6÷4

73.6-13.6×21.5÷4怎样简便怎样计算
73.6-13.6×21.5÷4怎样简便怎样计算

73.6-13.6×21.5÷4怎样简便怎样计算
73.6-13.6×21.5÷4
=73.6-13.6÷4×21.5
=73.6-3.4×21.5
=73.6-73.1
=0.5

73.6-136/10*215/10*1/4
=73.6-136/10*43/2*1/4
=73.6-136/10*43/8
=73.6-17/10*43
=73.6-73.1
=0.5