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 - 1.5 - Rewriting Equations and Formulas - Exercises - Page 42: 45

Answer

$a=\frac{b+c}{bx-1}$

Work Step by Step

The given equation is $\Rightarrow x=\frac{a+b+c}{ab}$ Multiply each side by $ab$. $\Rightarrow ab\cdot x=ab\cdot \frac{a+b+c}{ab}$ Simplify. $\Rightarrow abx=a+b+c$ Subtract $a$ from each side. $\Rightarrow abx-a=a+b+c-a$ Simplify. $\Rightarrow abx-a=b+c$ Use distributive property. $\Rightarrow a(bx-1)=b+c$ Divide both sides by $bx-1$. $\Rightarrow \frac{a(bx-1)}{bx-1}=\frac{b+c}{bx-1}$ Simplify. $\Rightarrow a=\frac{b+c}{bx-1}$ Hence, the rewritten literal equation is $a=\frac{b+c}{bx-1}$.
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