it should be 4x+4=8x im not in algebra but i read something about algebra that just take off the letters than add, sub,...
(ex)
4xy+x
start with making x=1 because there is no number to add.
than take off the letters on 4xy=4
than add 4+1=5
add the letters to the answer 4xy+x=5xy
This is all I know about algebra
