alright, so lets say the cat is x, the cauldron is y, and the pumpkin is z.
first, lets solve the cat and the pumpkin
2x=z
z+x=18
using substitution, the equations are simplified to 3x=18, or x=6. therefore, the value of the cat is 6. 2 times 6 is 12, so the value of the pumpkin is 12. x+y is 20, which means the cauldron’s value is 14.
so the final equation is 6+14-12, meaning the answer to this problem is 8.
