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
Answer:
75%
Step-by-step explanation:
red is 50 and the blue is 25
The answer to your question would be:
(X+8) x 4= 21x4
Step-by-step explanation:
There are many possible solutions. For example:
3x + 0 = 1x + 4
4x + 1 = 2x + 5
5x + 2 = 3x + 6