You have to distribute the 4 and the -1x to get -4x then you also have to distribute the 4 and 5 which is 20 then you rewrite it to
-4x+20=68 then you'll have to subtract 20 from both sides like this -4x+20=68
-20 -20
Then you get -4x=68, and you divide 68 by -4 and that gives you x
