Answer:
Step-by-step explanation:
4x+2y-6z-x-3y+2z= 3x-y-4z
For more help use math/way/./com
To make this a fraction, let's put

. We can divide both top and bottom by 6, leaving us with

. This is as far as we can reduce it, making it your answer. I hope this helps!
Answer:
15.38461538461538
Step-by-step explanation:
For the first is 3864
The second is 1320
A=3.14(which is pie) x 20.5^2
A=420x pie
A=1320
For the third is 2544
3864-1320=2544
Sorry if this is wrong too.