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Question
Solve: `("x" - 4)/7 = "x + 3"/7 + "x + 4"/5`
Sum
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Solution
`("x" - 4)/7 = "x + 3"/7 + "x + 4"/5`
⇒ `("5x" - 20 = 5x + 15 + 7x + 28)/35`
⇒ 5x - 5x - 7x = 15 + 28 + 20
⇒ - 7x = 63
⇒ x = `63/-7 = -9`
∴ x = - 9
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