20+4(3x-5)+2x=28
We move all terms to the left:
20+4(3x-5)+2x-(28)=0
We add all the numbers together, and all the variables
2x+4(3x-5)-8=0
We multiply parentheses
2x+12x-20-8=0
We add all the numbers together, and all the variables
14x-28=0
We move all terms containing x to the left, all other terms to the right
14x=28
x=28/14
x=2
