Answer:
2x+4x-3+8x+18=43
We move all terms to the left:
2x+4x-3+8x+18-(43)=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
(hope that helps)
