1. Write out the problem: 3x+12/3
2. Find the common factor: 3(x+4)/3
3. Cancel out the threes.
4. Once you cancel them out you get: x+4
Hope I could help. Have a great day!:-)))
= 36 x^6 / 9 x^8
= 4 / x^2
Its A
Subtract the 17190 from the 21840. you get 4650. 4650 divided by 21840 is 0.21. The percent decrease is 21%
