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数学
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(-5)×十三分之三+(-5)×负13分之2-5×13分之1+0.125×(-13分之14)×(-8)
人气:487 ℃ 时间:2020-02-15 13:39:18
解答
-5提取:(-5)×(3/13-2/13+1/13)+0.125×8×14/13
0.125×8=1:-5×2/13+14/13
合并:(14-5×2)/13=4/13
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