1-1\2×(1.8÷14\5+0.375)=
问题描述:
1-1\2×(1.8÷14\5+0.375)=
托式计算
答
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