12) - 6n - 20 = - 2n + 4 (1 - 3n)

What's the first step

n = 3

Step-by-step explanation:

-6n - 20 = - 2n + 4 (1-3n)

First distribute the 4 (1-3n)

-6n - 20 = - 2n + 4 - 12n

Combine like terms on the right side

-6n - 20 = - 14n + 4

Get 'n' on one side by adding - 6n to both sides

-20 = - 8n + 4

Subtract 4 to both sides

-24 = - 8n

Divide - 8 to both sides

3 = n