10y = 5y + 6 + 4y?

note
10y = 5y + 6 + 4y
combine like terms
10y = 9y + 6
get variable to one side by adding -9y to both sides
y = 6

10y= 5y+6+4y

5y+4y=9y

10y= 9y + 6
-9y -9y
_____________

1y= 6+0

y= 6

10y=9y+6
y=6

First, get all the y's to one side.
y=6
Wow, that was pretty easy...

y=6

10y = 9y + 6
y = 6

* to check your answer: plug 6 back to the equation!

y = 6

10y = 5y + 6 + 4y
10y - 5y - 4y = 6
5y - 4y = 6
y = 6

10y = 9y + 6
y = 6