-3.75-(0.75+1 - 5/6)x(- 四又4/5) =
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![-3.75-(0.75+1 - 5/6)x(- 四又4/5) =](/uploads/image/z/8824562-26-2.jpg?t=-3.75-%280.75%2B1+-+5%2F6%29x%28-+%E5%9B%9B%E5%8F%884%2F5%29+%3D)
-3.75-(0.75+1 - 5/6)x(- 四又4/5) =
-3.75-(0.75+1 - 5/6)x(- 四又4/5) =
-3.75-(0.75+1 - 5/6)x(- 四又4/5) =
-3.75-(0.75+1 - 5/6)x(- 四又4/5)
=-3.75+(3/4+1-5/6)x24/5
=-3.75+7/4x24/5-5/6x24/5
=-3.75+42/5-4
=-3.75+8.4-4
=8.4-7.75
=0.65