(2+x)(7-x)/(5-x)(4+x)=1
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14+7x-2x-x²÷20-4x+5x-x²=1
14+7x-2x-x²=20-4x+5x-x²
4x-7x+7x-x²+x²= -14+20
4x= 6
x= 6/4=3/2= 1¹/2 ans..is it correct?
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