Question

The sum of 4 times a number and 8 is equal to 9

Answer 1

Assume that the number is x

So add 4 times x and 8, then equate the sum by 9

$\begin{gathered} 4\times x+8=9 \\ 4x+8=9 \end{gathered}$

To solve the equation subtract 8 from both sides

$\begin{gathered} 4x+8-8=9-8 \\ 4x=1 \end{gathered}$

Divide both sides by 4

$\begin{gathered} \frac{4x}{4}=\frac{1}{4} \\ x=\frac{1}{4} \end{gathered}$

Since x represents the number

So the number is 1/4