{0.85-[12+4*(3-10)]}/5 (27/20-8/15)/(0.2-6.8) 2+(1+2/5-1/3)
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/06/03 07:00:09
{0.85-[12+4*(3-10)]}/5 (27/20-8/15)/(0.2-6.8) 2+(1+2/5-1/3)
{0.85-[12+4*(3-10)]}/5
={0.85-[12+4*(-7)]}/5
={0.85-[12-28]}/5
={0.85-[-16]}/5
=16.85/5
=3.37
(27/20-8/15)/(0.2-6.8)
=(81/60-32/60)/(-6.6)
=(49/60)/(-33/5)
=-49/396
2+(1+2/5-1/3)
=2+(7/5-1/3)
=2+(21/15-5/15)
=2+16/15
=46/15
={0.85-[12+4*(-7)]}/5
={0.85-[12-28]}/5
={0.85-[-16]}/5
=16.85/5
=3.37
(27/20-8/15)/(0.2-6.8)
=(81/60-32/60)/(-6.6)
=(49/60)/(-33/5)
=-49/396
2+(1+2/5-1/3)
=2+(7/5-1/3)
=2+(21/15-5/15)
=2+16/15
=46/15
{0.85-[12+4*(3-10)]}/5 (27/20-8/15)/(0.2-6.8) 2+(1+2/5-1/3)
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