计算: (1) (-2)/(-3分之1) (2)1又4分之3/(-1又6分之1) (3) (0.75)/(-7分之3)
(4)(-2)/(-3分之1)/(-2分之3)(5)(-2)/(-2又4分之1)*(-1.5)(6)(-4又3分之2)/2又5分4/(-3又8分之1)*(-0.75)急用...
(4) (-2)/(-3分之1)/(-2分之3) (5) (-2)/(-2又4分之1)*(-1.5)
(6) (-4又3分之2)/2又5分4/(-3又8分之1)*(-0.75)
急用,两点之前能好,求.... 展开
(6) (-4又3分之2)/2又5分4/(-3又8分之1)*(-0.75)
急用,两点之前能好,求.... 展开
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(1) (-2)/(-3分之1)
=-6
(2)1又4分之3/(-1又6分之1)
=-7/4÷7/6
=3/2
(3) (0.75)/(-7分之3)
=-3/4÷7/3
=-7/4
(4) (-2)/(-3分之1)/(-2分之3)
=-2x3x2/3
=-4
(5) (-2)/(-2又4分之1)*(-1.5)
=-2x4/9x3/2
=-4/3
(6) (-4又3分之2)/2又5分4/(-3又8分之1)*(-0.75)
=-14/3x5/14x8/25x3/4
=-5/3x6/25
=-2/5
=-6
(2)1又4分之3/(-1又6分之1)
=-7/4÷7/6
=3/2
(3) (0.75)/(-7分之3)
=-3/4÷7/3
=-7/4
(4) (-2)/(-3分之1)/(-2分之3)
=-2x3x2/3
=-4
(5) (-2)/(-2又4分之1)*(-1.5)
=-2x4/9x3/2
=-4/3
(6) (-4又3分之2)/2又5分4/(-3又8分之1)*(-0.75)
=-14/3x5/14x8/25x3/4
=-5/3x6/25
=-2/5
追问
7/4这个是4分之7还是7分之4
追答
4分之7
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