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: 10

Answer

$n=-1$

Work Step by Step

$\begin{align*} n-6+6&=-7+6 &\text{Add 6 to each side of the equation.}\\ n&=-1 &\text{Simplify}. \end{align*}$ Check if the solution is correct by substituting $-1$ to the variable in the original equation: $\begin{align*} n-6&=-7\\ -1-6&\stackrel{?}{=}-7\\ -7&\stackrel{\checkmark}{=}-7 \end{align*}$ Thus, the solution is $n=-1$.
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