Answer:
y = - 143/60 = -2 23/60
Step-by-step explanation:
The Least Common Multiple is used to add fractions with unlike denominators:
Three things can happen:
1/3 + 1/7 - the LCM is the product of the denominators (in this case 21)
2/8 + 3/16 - the LCM is the greater denominator (in this case 16)
2/9 + 5/6 - the LCM is lower than the product of the denominators (in this case it is 18)
The Greatest Common Factor is used to reduce fractions quickly:

÷

=

By using the GCF -in this case 24, I reduced the fraction in a single step.
If I kept dividing by 2/2 (not the GCF), it would take much longer:
48/72 = 24/36 = 12/18 = 6/9 and then I would still have to divide 6/9 by 3/3 to get 2/3
Im not 100% sure if it’s right but i think you do
pi x r^2 which means pi x 12^2 =452.3893421(if you round it in 2dp its 452.39)
If you need the volume then you times it by 35.
Add them all together: 3 + 4 + 5 + 8 = 20
Add green and blue: 5 + 3 = 8
8/20
Simplify this, and you will have 2/5
Hope I could help! Let me know if there is anything else you need!
p.s. Brainliest? I am trying to get to higher ranks and it would really help :)