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Question

Solve the following equation and verify your answer:
2x-(7-5x)9x-(3+4x)=76

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Solution

2x-(7-5x)9x-(3+4x)=76or 7x-75x-3=76or 42x-42=35x-21 [After cross multiplication]or 42x-35x=-21+42or 7x=21or x=217or x=3Thus, x=3 is the solution of the given equation.Check:Substituting x=3 in the given equation, we get:L.H.S.=2×3-(7-5×3)9×3-(3+4×3)=6-(7-15)27-(3+12)=6+827-15=1412=76R.H.S.=76 L.H.S.=R.H.S. for x=3.

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