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Question

Solve: 3x+55x23=5x76.

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Solution

Given, 3x+55x23=5x76

3(3x+5)5(x2)5×3=5x76 …[Cross-multiplying the denominators on the LHS]

9x+155x+105×3=5x76 ...[By Distribution Law]

4x+255=5x72 ...[Multiplying 3 on both sides and simplifying]

(4x+25)2=(5x7)5 …[Cross-multiplying the denominators]

8x+50=25x35 ...[By Distribution Law]

35+50=25x8x ...[Transposing x terms to one side]

17x=85 ...[On simplifying]

x=8517 ...[Dividing 175 on both sides]

x=5.

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