1.7-(4.875-2.75)×80% 简便方法?
展开全部
=1.7-(4+0.875-2-0.75)x0.8
=1.7-(4-2+0.875-0.75)x0.8
=1.7-(2+0.125)x0.8
=1.7-(2x0.8+0.125x0.8)
=1.7-(1.6+0.1)
=1.7-1.7
=0
=1.7-(4-2+0.875-0.75)x0.8
=1.7-(2+0.125)x0.8
=1.7-(2x0.8+0.125x0.8)
=1.7-(1.6+0.1)
=1.7-1.7
=0
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2021-08-26
展开全部
=1.7-(4+0.875-2-0.75)x0.8
=1.7-(4-2+0.875-0.75)x0.8
=1.7-(2+0.125)x0.8
=1.7-(2x0.8+0.125x0.8)
=1.7-(1.6+0.1)
=1.7-1.7
=0
楼上那个2.125是怎么来的?根本不简单。
纯手打,有帮助的话请采纳,谢谢
=1.7-(4-2+0.875-0.75)x0.8
=1.7-(2+0.125)x0.8
=1.7-(2x0.8+0.125x0.8)
=1.7-(1.6+0.1)
=1.7-1.7
=0
楼上那个2.125是怎么来的?根本不简单。
纯手打,有帮助的话请采纳,谢谢
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展开全部
1.7-(4.875-2.75)×80%
= 1.7 -2.125x0.8
=1.7 - 17/8 x 8/10
= 1.7 - 17/10
=1.7-1.7
=0
= 1.7 -2.125x0.8
=1.7 - 17/8 x 8/10
= 1.7 - 17/10
=1.7-1.7
=0
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展开全部
1.7-(4.875-2.75)x80%
=1.7-2.125x80%
=1.7-(2+0.125)x8%
=1.7-(1.6+0.1)
=1.7-1.7
=0
=1.7-2.125x80%
=1.7-(2+0.125)x8%
=1.7-(1.6+0.1)
=1.7-1.7
=0
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