5/17*(-3/7)+5/17*(-4/7)-12/17 (-0.75)*(-3又1/8)-0.75*(-4又7/8) 简便计算
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![5/17*(-3/7)+5/17*(-4/7)-12/17 (-0.75)*(-3又1/8)-0.75*(-4又7/8) 简便计算](/uploads/image/z/1263753-9-3.jpg?t=5%2F17%2A%EF%BC%88-3%2F7%EF%BC%89%2B5%2F17%2A%EF%BC%88-4%2F7%EF%BC%89-12%2F17+%EF%BC%88-0.75%EF%BC%89%2A%EF%BC%88-3%E5%8F%881%2F8%EF%BC%89-0.75%2A%EF%BC%88-4%E5%8F%887%2F8%EF%BC%89+%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
5/17*(-3/7)+5/17*(-4/7)-12/17 (-0.75)*(-3又1/8)-0.75*(-4又7/8) 简便计算
5/17*(-3/7)+5/17*(-4/7)-12/17 (-0.75)*(-3又1/8)-0.75*(-4又7/8) 简便计算
5/17*(-3/7)+5/17*(-4/7)-12/17 (-0.75)*(-3又1/8)-0.75*(-4又7/8) 简便计算
5/17*(-3/7)+5/17*(-4/7)-12/17
=5/17*(-3/7-4/7)-12/17
=5/17*(-1)-12/17
=-5/17-12/17
=-1
(-0.75)*(-3又1/8)-0.75*(-4又7/8)
=0.75*(3又1/8)+0.75*(4又7/8)
=0.75*(3又1/8+4又7/8)
=0.75*8
=6