If you plug everything in you get 10+16(divided by)4+3z. 16 divided by 4 is 4. 10 plus 4 is 14 so after pemdas you have 14+3z left.
3 science is very use full and helps you understand the world around you
Let x = red
Let 0.5x = green
Let (x) + (0.5x) = 1.5x = blue
Let 0.5(1.5x) = 0.75x = yellow
Let 0.75x + 4 = brown





Use this value to calculate the other required numbers.
red = 28
green = 0.5x = 0.5(28) = 14
blue = 1.5x = 1.5(28) = 42
yellow = 0.75x = 0.75(28) = 21
brown = 0.75x + 4 = 0.75(28) + 4 = 25