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Mathematics

Solve:

x+78x3=17x65x8x + 7 -\dfrac{8x}{3} = \dfrac{17x}{6} - \dfrac{5x}{8}

Linear Eqns One Variable

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Answer

x+78x3=17x65x8x + 7 -\dfrac{8x}{3} = \dfrac{17x}{6} - \dfrac{5x}{8}

Since L.C.M. of denominators 6 and 8 = 24, multiply each term with 24 to get:

x×24+7×248x×243=17x×2465x×248⇒ x\times 24 + 7\times 24 -\dfrac{8x\times 24}{3} = \dfrac{17x \times 24}{6} - \dfrac{5x \times 24}{8}

⇒ 24x + 168 - 8x ×\times 8 = 17x ×\times 4 - 5x ×\times 3

⇒ 24x + 168 - 64x = 68x - 15x

⇒ 168 - 40x = 53x

⇒ - 53x - 40x = - 168

⇒ - 93x = - 168

⇒ x = 16893\dfrac{168}{93}

⇒ x = 5631\dfrac{56}{31}

⇒ x = 125311\dfrac{25}{31}

Hence, the value of x is 125311\dfrac{25}{31}

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