Question

Use the substitution property of equality to complete the following statement.

Answer 1

Given:-

$8x+y=12$

To find x when y is 3.

So now we substitute,

$\begin{gathered} 8x+y=12 \\ 8x+3=12 \\ 8x=12-3 \\ 8x=9 \\ x=\frac{9}{8} \end{gathered}$

So the value is,

$\frac{9}{8}$