Question 32896
8x - 4 = 7x

subtract 7x from both sides and we get....

8x - 7x - 4 = 0

x - 4 = 0 

subtract 4 from both sides and we get ..........

x = 4 

Now if you want to verify you answer, you can put the values of x in the given equation and if you get LHS = RHS, this means that you answer is correct..

Hope this will help you.

Please feel free to revert back for any further queries.