Big Ideas Math - Algebra 1, A Common Core Curriculum

Published by Big Ideas Learning LLC
ISBN 10: 978-1-60840-838-2
ISBN 13: 978-1-60840-838-2

Chapter 2 - Solving Linear Inequalities - 2.5 - Solving Compound Inequalities - Exercises - Page 86: 26

Answer

The solution is $m\gt -5 $. The graph is shown below.

Work Step by Step

The given inequality is $\Rightarrow 2m-1\geq 5$ or $5m \gt -25$ Solve the first inequality. $\Rightarrow 2m-1\geq 5$ Add $1$ to each side. $\Rightarrow 2m-1+1\geq 5+1$ Simplify. $\Rightarrow 2m\geq 6$ Divide each side by $2$. $\Rightarrow \frac{2m}{2}\geq \frac{6}{2}$ Simplify. $\Rightarrow m\geq 3$ Solve the second inequality. $\Rightarrow 5m\gt -25$ Divide each side by $5$. $\Rightarrow \frac{5m}{5}\gt \frac{-25}{5}$ Simplify. $\Rightarrow m\gt -5$ Merge the overlap solution Hence, the solution is $m\gt -5 $.
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