Help Me! I need an explanation of how to do it. PLEASE. I need every step

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?