(-1/7)÷1/42×5/6÷(-5/8)=? (-1/2+2/3-1/4)×(-12)=? 急求过程!!
(-1/7)÷1/42×5/6÷(-5/8)
= (-1/7)*42 *(5/6) *(-8/5)
= -6 *(5/6)*(-8/5)
=8
(-1/2+2/3-1/4)×(-12)
=(-6 +8 -3)/12 *(-12)
= 1追问
= (-1/7)*42 *(5/6) *(-8/5)
= -6 *(5/6)*(-8/5)
=8
(-1/2+2/3-1/4)×(-12)
=(-6 +8 -3)/12 *(-12)
= 1追问
* 这个是什么意思?
追答乘号
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