Kevin is 4 times as old as Daniel and is also 6 years older than Daniel.

How old is Daniel?

Daniel would be 2 years old. Your equation would be 4x=6+x.

To solve, first combine like terms. 4x=6+x would become 3x=6 after adding like terms. Then you would divide 6 by 3 to get x alone. X would equal 2 after dividing.