x equals 2, and y equals 3. (2,3). You’ll get this answer by putting 4x + 20 and x + 26 equal to each other. (4x+20=x+36). You do this because the shape is a parallelogram so the sides that are opposite of each other have the exact same length. Then we solve for x. First, we take the “b” value, (which is the number without the x next to it) and then we subtract it by itself and then subtract that same number from the other side of the equal sign. (4x+20-20=x+26-20). And then you simplify it which will make the equation now 4x=x+6. Now subtract the x value from the side with the 6 and subtract by that same number on the side with 4x. (4x-x=x-x +6). Simplify. (3x=6) Since 3x and 6 are different variables, we divide them instead of subtracting. So, we now divide the x value(s) by 6. (6 divided by 3x). The answer you get from that is your x value (2).
Now you can solve the answers for the other two sides with the x value now found. So, we set the equations for the next two equations equal to each other. (7y=6x +9). Now, we sub in the x value we found into the equation. (7y=6(2) +9). Simplify. (7y=21). Now all you have to do is divide 21 by 7y, which will give you your y value of 3.
Hope that this was helpful!