Question

1.) 16n - 4 = -2n + 86

Explanation:

Step1: Add $2n$ to both sides

$16n - 4 + 2n = -2n + 86 + 2n$
$18n - 4 = 86$

Step2: Add 4 to both sides

$18n - 4 + 4 = 86 + 4$
$18n = 90$

Step3: Divide by 18 on both sides

$\frac{18n}{18} = \frac{90}{18}$
$n = 5$

Answer:

$n = 5$