一(1/2-1/3-1/4+1/12)*(-24) 二(-5/6)*(1又1/3)/(-1又2/3)三 (1/2-1/3)/(-2/3)*1/3 怎么做,要过程
2个回答
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(1/2-1/3-1/4+1/12)*(-24)
=(1/2)*(-24)-(1/3)*(-24)-(1/4)*(-24)+(1/12)*(-24)
=(-12)+8+6+(-2)
=0
(-5/6)*(1又1/3)/(-1又2/3)
=(-5/6)*(4/3)/(-5/3)
=(-5/6)*(4/3)*(-3/5)
=2/3
(1/2-1/3)/(-2/3)*1/3
=(1/6)/(-2/3)*(1/3)
=(1/6)*(-3/2)*(1/3)
=-1/12
=(1/2)*(-24)-(1/3)*(-24)-(1/4)*(-24)+(1/12)*(-24)
=(-12)+8+6+(-2)
=0
(-5/6)*(1又1/3)/(-1又2/3)
=(-5/6)*(4/3)/(-5/3)
=(-5/6)*(4/3)*(-3/5)
=2/3
(1/2-1/3)/(-2/3)*1/3
=(1/6)/(-2/3)*(1/3)
=(1/6)*(-3/2)*(1/3)
=-1/12
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(1/2-1/3-1/4+1/12)*(-24)1/2×(-24)
=1/2×(-24)-1/3×(-24)+1/12×(-24)
= -12+8-2
= -6
二(-5/6)*(1又1/3)/(-1又2/3)
= -5/6×4/3×(-3/5)
=2/3
三 (1/2-1/3)/(-2/3)*1/3
=1/6×(-3/2)×1/3
= -1/12
=1/2×(-24)-1/3×(-24)+1/12×(-24)
= -12+8-2
= -6
二(-5/6)*(1又1/3)/(-1又2/3)
= -5/6×4/3×(-3/5)
=2/3
三 (1/2-1/3)/(-2/3)*1/3
=1/6×(-3/2)×1/3
= -1/12
追问
-(-1又7/9)^2 怎么做
追答
-(-1又7/9)^2
= -256/81
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