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Question

Mathematics Question on inequalities

Solve the given inequality for realx:x3>x2+1x:\frac{ x}{3} > \frac{x}{2} +1.

Answer

x3>x2+1\frac{ x}{3} > \frac{x}{2} +1
x3x2>1\frac{ x}{3} - \frac{x}{2} >1
2x3x6>1⇒ \frac{2x-3x}{6} > 1
x6>1⇒ -\frac{x}{6} > 1
x>6⇒ -x >6
x<6⇒ x < -6
Thus, all real numbers x, which are less than –6, are the solutions of the given inequality.
Hence, the solution set of the given inequality is (–∞, –6).