3(x-1)-2(2x+3)=0 2(x-2)-(4x-1)=3(1-x) 6x-7(9-x)=4x-3(20-x)
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/09/24 08:23:16
3(x-1)-2(2x+3)=0 2(x-2)-(4x-1)=3(1-x) 6x-7(9-x)=4x-3(20-x)
3(x-1)-2(2x+3)=0
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=>3x-3-4x-6=0 =>-x-9=0 =>-9=x...ans
2(x-2)-(4x-1)=3(1-x)
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=>2x-4-4x+1=3-3x=>-2x-3=3-3x =>x=6...ans
6x-7(9-x)=4x-3(20-x)
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=>6x-63+7x=4x-60+3x =>13x-63=7x-60 =>6x=3 => x=0.5...ans
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=>3x-3-4x-6=0 =>-x-9=0 =>-9=x...ans
2(x-2)-(4x-1)=3(1-x)
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=>2x-4-4x+1=3-3x=>-2x-3=3-3x =>x=6...ans
6x-7(9-x)=4x-3(20-x)
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=>6x-63+7x=4x-60+3x =>13x-63=7x-60 =>6x=3 => x=0.5...ans
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