一 4.6减去2与0.4的积比x的3倍少0.1,求x. 二 某数的四倍加上等于它的5倍减去2,求着个数.三 15x-(5x+7) (当x=12时) 5aa+bc (当a=5,b+1.2,c+2.5时)四 9.6-0.4x=2.8 1.1(4x-2)=12.1
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![一 4.6减去2与0.4的积比x的3倍少0.1,求x. 二 某数的四倍加上等于它的5倍减去2,求着个数.三 15x-(5x+7) (当x=12时) 5aa+bc (当a=5,b+1.2,c+2.5时)四 9.6-0.4x=2.8 1.1(4x-2)=12.1](/uploads/image/z/210447-63-7.jpg?t=%E4%B8%80+4.6%E5%87%8F%E5%8E%BB2%E4%B8%8E0.4%E7%9A%84%E7%A7%AF%E6%AF%94x%E7%9A%843%E5%80%8D%E5%B0%910.1%2C%E6%B1%82x.+%E4%BA%8C+%E6%9F%90%E6%95%B0%E7%9A%84%E5%9B%9B%E5%80%8D%E5%8A%A0%E4%B8%8A%E7%AD%89%E4%BA%8E%E5%AE%83%E7%9A%845%E5%80%8D%E5%87%8F%E5%8E%BB2%2C%E6%B1%82%E7%9D%80%E4%B8%AA%E6%95%B0.%E4%B8%89+15x-%285x%2B7%29+++++%28%E5%BD%93x%3D12%E6%97%B6%29++++++5aa%2Bbc+++++++++++%28%E5%BD%93a%3D5%2Cb%2B1.2%2Cc%2B2.5%E6%97%B6%29%E5%9B%9B+9.6-0.4x%3D2.8+++++++++++1.1%284x-2%29%3D12.1)
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