Answer:
The height is 8
Step-by-step explanation:
Ratios are just fractions. That being said, you also have part of a fraction. You know that the colorado flag is in 2:3, and 12 feet long is according to that ratio; it equals each other.
Make the equation.

Now isolate x (in order to solve for it)

x= 8
The height is 8.
8/12 = 2/3 ✅
The keyword is "sum" which tells you x, y, and z are being added. One half of the sum means that the sum of the three numbers is going to be divided by 2.
x + y + z
------------
2
The answers to the first two systems of equations
Draw the one side then. Next to that you draw the other. Make sure there are noticeable differences between the two.