Question

solve for n.
2n + 9 = 8n + 21
simplify your answer as much as possible.
n = □

Explanation:

Step1: Isolate w terms

Subtract $2w$ from both sides:
$2w + 9 - 2w = 8w + 21 - 2w$
$9 = 6w + 21$

Step2: Isolate constant terms

Subtract 21 from both sides:
$9 - 21 = 6w + 21 - 21$
$-12 = 6w$

Step3: Solve for w

Divide both sides by 6:
$\frac{-12}{6} = \frac{6w}{6}$
$w = -2$

Answer:

$w = -2$