一:7x-2.5=9x-8二:4/3x-1/3=x/2+2/3三:5y+1/2=3y+1/4四:7x-9=3x/2-7五:1.2y-2=7-2.8y六:3/2x+1.5x+2=5x-3七:7y-9/4=1/4-3y八:9/5-y/2=3y-6/5九:4x-24=x+24十:5-6x=15-8x十一:7(x/2+7)=5-x十二:3(7-x)=4x-1十三:5x+8=6(7-x)
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![一:7x-2.5=9x-8二:4/3x-1/3=x/2+2/3三:5y+1/2=3y+1/4四:7x-9=3x/2-7五:1.2y-2=7-2.8y六:3/2x+1.5x+2=5x-3七:7y-9/4=1/4-3y八:9/5-y/2=3y-6/5九:4x-24=x+24十:5-6x=15-8x十一:7(x/2+7)=5-x十二:3(7-x)=4x-1十三:5x+8=6(7-x)](/uploads/image/z/14527301-5-1.jpg?t=%E4%B8%80%EF%BC%9A7x-2.5%3D9x-8%E4%BA%8C%EF%BC%9A4%2F3x-1%2F3%3Dx%2F2%2B2%2F3%E4%B8%89%EF%BC%9A5y%2B1%2F2%3D3y%2B1%2F4%E5%9B%9B%EF%BC%9A7x-9%3D3x%2F2-7%E4%BA%94%EF%BC%9A1.2y-2%3D7-2.8y%E5%85%AD%EF%BC%9A3%2F2x%2B1.5x%2B2%3D5x-3%E4%B8%83%EF%BC%9A7y-9%2F4%3D1%2F4-3y%E5%85%AB%EF%BC%9A9%2F5-y%2F2%3D3y-6%2F5%E4%B9%9D%EF%BC%9A4x-24%3Dx%2B24%E5%8D%81%EF%BC%9A5-6x%3D15-8x%E5%8D%81%E4%B8%80%EF%BC%9A7%28x%2F2%2B7%29%3D5-x%E5%8D%81%E4%BA%8C%EF%BC%9A3%287-x%29%3D4x-1%E5%8D%81%E4%B8%89%EF%BC%9A5x%2B8%3D6%287-x%29)
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