Answer:
you can change x=0=>y=-7/2 or
y=0=> x=2
Okay so you can add up all the marbles to find a rate and divide.
Total: 20 marbles
Blue: 25% chance
Red: 40% chance
Green: 45% chance
This is true . Solution , root , x and zero all are the same thing
Answer: use socratic you take a picture of the problem and it does it.