Question 161821
To combine the terms of variabels you simply match.
First find all variables(letters)
2x,5y,y

Now match the same variables, 5y and y both conatin y,you can combine them!
 *Any variable with no number is ALWAYS 1! For example: X,Y,Z-if you see any letter all by itself in a equation like these,let it stand for 1 when adding,subtracting,multipling,or dividing.
Now to finsih the equation we have to ADD 5y + y(if y=1 then the combined variables equal 6y.
After combining 5y and y and getting 6y lets finish,and solve! 
6y + 2x (now combine  5 +3=8) ANSWER-6y+2x+8