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5 − 2 X 3 < X 6 − 5 - Mathematics

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Question

\[\frac{5 - 2x}{3} < \frac{x}{6} - 5\] 

Solution

\[\frac{5 - 2x}{3} < \frac{x}{6} - 5\]
\[ \Rightarrow \frac{5 - 2x}{3} - \frac{x}{6} < - 5 \left[ \text{ Transposing } \frac{x}{6}to the LHS \right]\]
\[ \Rightarrow \frac{2\left( 5 - 2x \right) - x}{6} < - 5 \]
\[ \Rightarrow \frac{10 - 4x - x}{6} < - 5 \]
\[ \Rightarrow \frac{10 - 5x}{6} < - 5 \]
\[ \Rightarrow 10 - 5x < - 30\]
\[ \Rightarrow 10 + 30 < 5x\]
\[ \Rightarrow 40 < 5x\]
\[ \Rightarrow 5x > 40\]
\[ \Rightarrow x > \frac{40}{5}\]
\[ \Rightarrow x > 8\]
\[\text{ Hence, the solution set of the given inequality is } \left( 8, \infty \right) .\]

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Chapter 15: Linear Inequations - Exercise 15.1 [Page 10]

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RD Sharma Mathematics [English] Class 11
Chapter 15 Linear Inequations
Exercise 15.1 | Q 15 | Page 10

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