SOLUTION: Subtract and write in simplest form: 12 10 ---- - ---- Z Z Is the answer: 2 --- Z^2 Thank you very much

Algebra ->  Equations -> SOLUTION: Subtract and write in simplest form: 12 10 ---- - ---- Z Z Is the answer: 2 --- Z^2 Thank you very much      Log On


   

Question 66369: Subtract and write in simplest form:
12 10
---- - ----
Z Z
Is the answer:
2
---
Z^2
Thank you very much
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
THE MISTAKE YOU MADE IS TO SUBTRACT THE NUMERATORS AND THEN MULTIPLIED THE DENOMINATORS.
12/Z-10/Z=(12-10)/Z=2/Z THE DENOMINATORS ARE EQUAL THEREFORE YOU JUST ADD/SUBTRACT THE NUMERATORS.
EXAMPLES:
1/4+2/4=(1+2)/4=3/4
5/6-2/6=(5-2)/6=3/6=1/2
8/15-4/15=(8-4)/15=4/15
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IF YOU ARE MULTIPLYING FRACTIONS THEN JUST MULTIPLY THE NUMERATORS & THE DENOMINATORS THUS:
12/Z*10/Z=120/Z*Z=120/Z^2
1/4*2/4=2/16=1/8
5/6*-2/6=-10/36=-5/18
8/15*-4/15=-32/225