Red is a base colour. You cannot mix it from other colours.
If you mix red and green paint you get brown.
Red and green and add yellow to get a lighter brown red+green blue + orange pink + green purple + green purple + yellow red + green
brown
red
red
yup they do add light green with light red they'll give you yellow
yellow-green
put the smallest amount and add green and yellow
You would get yellow if you add green to red because these two colors combine to create the color yellow in the subtractive color model.
white
Some shade of brown. Red & blue make purple, add green and you get brown.
Taking away red from orange leaves yellow, and when you add blue to yellow, you get green.