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: 31

Answer

$t=-1$

Work Step by Step

Use the Subtraction Property of Equality by subtracting $\frac{3}{2}$ from each side of the equation: $$\begin{align*} \frac{3}{2}+t-\frac{3}{2}&=\frac{1}{2}-\frac{3}{2}\\ t&=-\frac{2}{2}\\\ t&=-1\end{align*}$$ Check the solution by substituting $-1$ to the variable in the given equation: $$\begin{align*} \frac{3}{2}+t&=\frac{1}{2}\\ \frac{3}{2}+(-1)&\stackrel{?}{=}\frac{1}{2}\\ \frac{1}{2}&\stackrel{\checkmark}{=}\frac{1}{2}\end{align*}$$ Thus, the solution is $t=-1$.
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