You add like terms, which means add the values with the x value, and the values with the y value, and never mix them. So for the x values, you have 4x + 2x, which equals 6x. Then you add the y values, 4y + 6y to get 10y. Then you add them to the remaining 6, and get
5x + 10y + 6
Here are some tips to help:
Like terms: terms that have the same variables and powers.
Examples: 2x & 50x; 100p & 2000p
Problem: Simplify 4x + 3y+ 6+ 2x+ 4y
Solution: