(2/3-3/4-1/12)X(-24)(-3/4)X(8- 1 1/3-0.04+ 3 1/5)我们今天教分配率 请按那个做 3L 请先看我的补充 1L 2L 希望改改
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![(2/3-3/4-1/12)X(-24)(-3/4)X(8- 1 1/3-0.04+ 3 1/5)我们今天教分配率 请按那个做 3L 请先看我的补充 1L 2L 希望改改](/uploads/image/z/444592-64-2.jpg?t=%EF%BC%882%2F3-3%2F4-1%2F12%EF%BC%89X%EF%BC%88-24%EF%BC%89%EF%BC%88-3%2F4%29X%288-+1+1%2F3-0.04%2B+3+1%2F5%EF%BC%89%E6%88%91%E4%BB%AC%E4%BB%8A%E5%A4%A9%E6%95%99%E5%88%86%E9%85%8D%E7%8E%87+%E8%AF%B7%E6%8C%89%E9%82%A3%E4%B8%AA%E5%81%9A+3L+%E8%AF%B7%E5%85%88%E7%9C%8B%E6%88%91%E7%9A%84%E8%A1%A5%E5%85%85+1L+2L+%E5%B8%8C%E6%9C%9B%E6%94%B9%E6%94%B9)
(2/3-3/4-1/12)X(-24)(-3/4)X(8- 1 1/3-0.04+ 3 1/5)我们今天教分配率 请按那个做 3L 请先看我的补充 1L 2L 希望改改
(2/3-3/4-1/12)X(-24)
(-3/4)X(8- 1 1/3-0.04+ 3 1/5)
我们今天教分配率 请按那个做
3L 请先看我的补充 1L 2L 希望改改
(2/3-3/4-1/12)X(-24)(-3/4)X(8- 1 1/3-0.04+ 3 1/5)我们今天教分配率 请按那个做 3L 请先看我的补充 1L 2L 希望改改
1.原式=2/3×(-24)+(-3/4)×(-24)+(-1/12)×(-24)
=-16+18+2=4
2.原式=(-3/4)×(8-4/3-1/25+16/5)
=(-3/4)×8+(-3/4)×(-4/3)+(-3/4)×(-1/25)
+(-3/4)×16/5
=-6+1+3/10-12/5=-71/10
先通分母(8/12-9/12-6/12)x(-24)
=(-1/12-6/12)x(-24)
=(-7/12)x(-24)
=14
2、
首先把小数化成分数
(-3/4)x(8-11/3-1/25+31/5)
(通分母)=(-3/4)x(600/75-275/75+3/75+465/75)
=(-3/4)x(793/75)
=-793/100
(2/3-3/4-1/12)X(-24)
=2/3×(-24)+3/4×24+1/12×24
=-16+18+2
=4
(-3/4)X(8- 1 1/3-0.04+ 3 1/5)
=-3/4×8+3/4×11/3+3/4×1/25-3/4×31/5
=-6+11/4+3/100-93/20
=-6+2.75+0.03-4.65
=-7.87
(2/3-3/4-1/12)X(-24)
=2/3X(-24)-3/4X(-24)-1/12X(-24)
=-16-(-18)-(-2)
=-16+18+2
=4
第二题没有写清楚
(-3/4)X(8-1 1/3-0.04+ 3 1/5)
=(-3/4)X(8-4/3-0.04+ 16/5)
=(-3/4)X8-(-3/4)X4/3-(-3/4)X0.04+(-3/4)X 16/5
=-6+1+0.03-12/5
=(-6)+1+0.03-2.4
=-7.37
1,(8/12-9/12-1/12)x(-24)
=(-2/12)x(-24)
=4
2,-6+11/4+0.03-12/5
=(-6)+2.75+0.03-2.4
=-5.62