1-1\2×(1.8÷14\5+0.375)=托式计算

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1-1\2×(1.8÷14\5+0.375)=
托式计算

1-1\2×(1.8÷14\5+0.375)
=1-1\2×(18/28+3/8)
=1-(1\2×18/28+1/2×3/8)
=1-(9/28+3/16)
=1-9/28-3/16
=76/112-21/112
=55/112