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Solve Each of the Following Equation and Also Check Your Result in Each Case: 3 a − 2 3 + 2 a + 3 2 = a + 7 6 - Mathematics

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Question

Solve the following equation and also check your result:
\[\frac{3a - 2}{3} + \frac{2a + 3}{2} = a + \frac{7}{6}\]

Sum

Solution

\[\frac{3a - 2}{3} + \frac{2a + 3}{2} = a + \frac{7}{6}\]
\[\text{ or }\frac{6a - 4 + 6a + 9}{6} = a + \frac{7}{6}\]
\[\text{ or }12a + 5 = 6a + 7\]
\[\text{ or }6a = 7 - 5\]
\[\text{ or }a = \frac{2}{6} = \frac{1}{3}\]
Check: 
\[\text{ L . H . S . }= \frac{3 \times \frac{1}{3} - 2}{3} + \frac{2 \times \frac{1}{3} + 3}{2} = \frac{- 1}{3} + \frac{11}{6} = \frac{9}{6} = \frac{3}{2}\]
\[\text{ R . H . S .} = \frac{1}{3} + \frac{7}{6} = \frac{9}{6} = \frac{3}{2}\]

∴  L.H.S. = R.H.S. for a = \[\frac{1}{3}\]

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Chapter 9: Linear Equation in One Variable - Exercise 9.2 [Page 11]

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RD Sharma Mathematics [English] Class 8
Chapter 9 Linear Equation in One Variable
Exercise 9.2 | Q 9 | Page 11

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