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Question

Solve the linear equation:

x+78x3=1765x2

A
x=5
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B
x=7
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C
x=9
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D
x=2
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Solution

The correct option is A x=5
Given,x+78x3=1765x23x+218x3=1715x6[TakingLCMonLHSandRHS]5x+213=1715x65x+21=1715x2[Multiplyingbothsidesby3]2(5x+21)=1715x[Bycrossmultiplication]10x+42=1715x10x+15x=1742[Transposing15xtoLHSand42toRHS]5x=25x=5[Dividebothsidesby5]

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