0.75+(-2 3/4)+(0.125)+(-12 5/7)+(-4
人气:291 ℃ 时间:2019-12-05 14:24:42
解答
0.75+(-2 3/4)+(0.125)+(-12 5/7)+(-4 1/8)=0.75+(-2.75)+(0.125)+(-12 5/7)+(-4.125)=0.75-2.75+0.125-12 5/7-4.125=(0.75-2.75)+(0.125-4.125)-12 5/7=-2-4-12 5/7=-6-12 5/7...
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