(-1/12)÷(1/4-1/6+1/2-1)
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/08/31 07:42:31
(-1/12)÷(1/4-1/6+1/2-1)
/还有 (-1.25)*1又1/7*(-2.5)*(-7/8) (-8)*(-7.2)*(-2.5)*5/12
/还有 (-1.25)*1又1/7*(-2.5)*(-7/8) (-8)*(-7.2)*(-2.5)*5/12
(1)
原式 = - 1/12 ÷ (3/12-2/12+6/12-12/12)
= - 1/12 ÷ (-5/12)
= 1/12×12/5
= 1/5
还有的
1.25……
= -5/4*8/7*(-5/2)-7/8
= 25/8
(-8)……
= -8*7.2*2.5*5/12
= -8*0.6*2.5*5
= -60
希望能帮到你,请采纳.
如果有问题请追问
原式 = - 1/12 ÷ (3/12-2/12+6/12-12/12)
= - 1/12 ÷ (-5/12)
= 1/12×12/5
= 1/5
还有的
1.25……
= -5/4*8/7*(-5/2)-7/8
= 25/8
(-8)……
= -8*7.2*2.5*5/12
= -8*0.6*2.5*5
= -60
希望能帮到你,请采纳.
如果有问题请追问
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