a=-9.375,b=1.5,c=-8/13测a+b+c等于谢谢了,
人气:465 ℃ 时间:2020-03-24 07:07:24
解答
a+b+c=-9.375+1.5+(-8/13) =(-150/16)+(3/2)+((-8/13) =(-1950/208)+(312/208)+(-128/208) =-1766/208 =-883/104 约=-8.4904
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