SOLUTION: Subtract 2/9t^8-1/6t^7

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: Subtract 2/9t^8-1/6t^7      Log On


   

Question 889319: Subtract 2/9t^8-1/6t^7
Found 2 solutions by Fombitz, Alan3354:
Answer by Fombitz(32388) About Me  (Show Source):
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Subtract 2/9t^8-1/6t^7
----------
Find a common denominator.
The product always works: 9t^8*6t^7 = 54t^15
---
2%2F9t%5E8+-+1%2F6t%5E7 = 6t^7/DEN - 9t^8/DEN
= (12t^7 - 9t^8)/54t^15
= 3t^7*(4 - 3t)/54t^15
= %284+-+3t%29%2F18t%5E8