Question

$42 = 6 + 9x$

Explanation:

Step1: Subtract 6 from both sides

$42 - 6 = 6 + 9x - 6$
$36 = 9x$

Step2: Divide both sides by 9

$\frac{36}{9} = \frac{9x}{9}$

Answer:

$x = 4$