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Question

Solve the following equation and verify your answer:
9x-73x+5=3x-4x+6

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Solution

9x-73x+5=3x-4x+6or 9x2-7x+54x-42=9x2-12x+15x-20 [After cross multiplication]or 9x2-9x2+47x-3x=-20+42or 44x=22or x=2244or x=12Thus, x=12 is the solution of the given equation.Check:Substituting x=12 in the given equation, we get:L.H.S.=9(12)-73(12)+5=9-143+10=-513R.H.S.=3(12)-412+6=3-81+12=-513 L.H.S.=R.H.S. for x=12

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