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 1 - Solving Linear Equations - 1.1 - Solving Simple Equations - Exercises - Page 9: 33

Answer

$m=14$

Work Step by Step

Use the Multiplication Property of Equality by multiplying $\frac{7}{3}$ to both side of the equation: $$\begin{align*} \left(\frac{3}{7}m\right) \cdot \frac{7}{3}&=6 \cdot \frac{7}{3}\\ m&=\frac{42}{36}\\\ m&=14\end{align*}$$ Check the solution by substituting $14$ to the variable in the given equation: $$\begin{align*} \frac{3}{7}m&=6\\ \frac{3}{7}(14)&\stackrel{?}{=}6\\ \frac{42}{7}&\stackrel{?}{=}6\\ 6&\stackrel{\checkmark}{=}6\end{align*}$$ Thus, the solution is $m=14$.
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