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(2-7x)/(1-5x) = (3+7x)/(4+5x)...

` (2-7x)/(1-5x) = (3+7x)/(4+5x)`

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`(2-7x)/(1-5x) = (3+7x)/(4+5x)`
`=>(2-7x)(4+5x) = (3+7x)(1-5x)`
`=>8+10x-28x+35x^2 = 3+7x-15x+35x^2`
`=>-18x+8x = 3-8`
`=> -10x = -5`
`=>x = 1/2.`
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