1道计算题.(-1/2 +1/6 -3/8 +5/12)* (-24) = = =(-1/2 +1/6 -3/8 +5/12)* (-24)===
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![1道计算题.(-1/2 +1/6 -3/8 +5/12)* (-24) = = =(-1/2 +1/6 -3/8 +5/12)* (-24)===](/uploads/image/z/627164-44-4.jpg?t=1%E9%81%93%E8%AE%A1%E7%AE%97%E9%A2%98.%EF%BC%88-1%2F2+%2B1%2F6+-3%2F8+%2B5%2F12%EF%BC%89%2A+%EF%BC%88-24%EF%BC%89+%3D+%3D+%3D%EF%BC%88-1%2F2+%2B1%2F6+-3%2F8+%2B5%2F12%EF%BC%89%2A+%EF%BC%88-24%EF%BC%89%3D%3D%3D)
1道计算题.(-1/2 +1/6 -3/8 +5/12)* (-24) = = =(-1/2 +1/6 -3/8 +5/12)* (-24)===
1道计算题.(-1/2 +1/6 -3/8 +5/12)* (-24) = = =
(-1/2 +1/6 -3/8 +5/12)* (-24)
=
=
=
1道计算题.(-1/2 +1/6 -3/8 +5/12)* (-24) = = =(-1/2 +1/6 -3/8 +5/12)* (-24)===
原式=(-12/24+4/24-9/24+10/24) *(-24)
=(-7/24)*(-24)
=7