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Solve : x + 5 > 4x – 10

\[\begin{array}{*{35}{l}}

x\text{ }+\text{ }5\text{ }>\text{ }4x\text{ }-\text{ }10  \\

x\text{ }+\text{ }5\text{ }-\text{ }5\text{ }>\text{ }4x\text{ }-\text{ }10\text{ }-\text{ }5  \\

x\text{ }>\text{ }4x\text{ }-\text{ }15  \\

4x\text{ }-\text{ }15\text{ }<\text{ }x  \\

4x\text{ }-\text{ }15\text{ }-\text{ }x\text{ }<\text{ }x\text{ }-\text{ }x  \\

3x\text{ }-\text{ }15\text{ }<\text{ }0  \\

3x\text{ }-\text{ }15\text{ }+\text{ }15\text{ }<\text{ }0\text{ }+\text{ }15  \\

3x\text{ }<\text{ }15  \\

\end{array}\]

Dividing both sides by 3, we get

\[\begin{array}{*{35}{l}}

3x/3\text{ }<\text{ }15/3  \\

x\text{ }<\text{ }5  \\

\end{array}\]

∴ The solution of the given inequation is (-∞, 5).