first simplify with distribuation 6x-5=5x-15+x add like terms 6x-5=6x-15 then well you sure this is the correct question then add 5 to both sides 6x=6x-10 then are you sure this is correct then sub 6x from both sides so 0 = -10 which it doesn't so this would be false if you have to find x then well I think you got the wrong question.