20财富值
4个回答
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(1)
=8+(-4/1)+(-5)+(-4/1)
=8+[(-4/1)+(-5)+(-4/1)
=8+(-5又2/1)
=2/5
(2)
=-1—2/3×3/1×(-4/1)
=-1-(-8/1)
=-8/7
(3)
=(-4/3-9/5+12/7)×36
=(-4/3×36-9/5×36+12/7×36
=-27—20+21
=14
(4)
=[-16×(-8/7)+(-16)×4/3+(-16)×(-2/1)×(-5/1)
=14+(-12)+8]×(-5/1)
=10×(-5/1)
=-2
=8+(-4/1)+(-5)+(-4/1)
=8+[(-4/1)+(-5)+(-4/1)
=8+(-5又2/1)
=2/5
(2)
=-1—2/3×3/1×(-4/1)
=-1-(-8/1)
=-8/7
(3)
=(-4/3-9/5+12/7)×36
=(-4/3×36-9/5×36+12/7×36
=-27—20+21
=14
(4)
=[-16×(-8/7)+(-16)×4/3+(-16)×(-2/1)×(-5/1)
=14+(-12)+8]×(-5/1)
=10×(-5/1)
=-2
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