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 8: 5

Answer

$x=3$

Work Step by Step

$\begin{align*} x+5-5&=8-5 &\text{Subtract 5 from each side of the equation.}\\ x&=3 &\text{Simplify}. \end{align*}$ Check. if the solution is correct by substituting $3$ to the variable in the original equation: $\begin{align*} x+5&=8\\ 3+5&\stackrel{?}{=}8\\ 8&\stackrel{\checkmark}{=}8 \end{align*}$ Thus, the solution is $x=3$.
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