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Solve : (9x+7)/(2)-(x-(x-2)/(7))=36...

Solve :
`(9x+7)/(2)-(x-(x-2)/(7))=36`

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The correct Answer is:
To solve the equation \((9x + 7)/2 - (x - (x - 2)/7) = 36\), we will follow these steps: ### Step 1: Simplify the equation Start by rewriting the equation: \[ \frac{9x + 7}{2} - \left( x - \frac{x - 2}{7} \right) = 36 \] ### Step 2: Simplify the expression inside the parentheses We need to simplify \(x - \frac{x - 2}{7}\): \[ x - \frac{x - 2}{7} = x - \left(\frac{x}{7} - \frac{2}{7}\right) = x - \frac{x}{7} + \frac{2}{7} \] To combine the terms, we can express \(x\) as \(\frac{7x}{7}\): \[ \frac{7x}{7} - \frac{x}{7} + \frac{2}{7} = \frac{7x - x + 2}{7} = \frac{6x + 2}{7} \] Now, substitute this back into the equation: \[ \frac{9x + 7}{2} - \frac{6x + 2}{7} = 36 \] ### Step 3: Find a common denominator The least common multiple (LCM) of 2 and 7 is 14. We will multiply both sides of the equation by 14 to eliminate the fractions: \[ 14 \left(\frac{9x + 7}{2}\right) - 14 \left(\frac{6x + 2}{7}\right) = 14 \cdot 36 \] This simplifies to: \[ 7(9x + 7) - 2(6x + 2) = 504 \] ### Step 4: Distribute the terms Now distribute: \[ 63x + 49 - 12x - 4 = 504 \] Combine like terms: \[ (63x - 12x) + (49 - 4) = 504 \] This simplifies to: \[ 51x + 45 = 504 \] ### Step 5: Isolate the variable Subtract 45 from both sides: \[ 51x = 504 - 45 \] This gives: \[ 51x = 459 \] ### Step 6: Solve for \(x\) Now, divide both sides by 51: \[ x = \frac{459}{51} \] Calculating this gives: \[ x = 9 \] ### Final Answer Thus, the solution to the equation is: \[ \boxed{9} \]
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