Question

Which of the numbers 12, 13, or 14 is the solution of 106 = 118 - x?

Answer 1

The given expression is

$106=118-x$

First, we add x on each side

$\begin{gathered} 106+x=118-x+x \\ 106+x=118 \end{gathered}$

Then, we subtract 106 from each side

$\begin{gathered} 106-106+x=118-106 \\ x=12 \end{gathered}$