SOLUTION: How do you solve 4/5-1/7?

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Question 588630: How do you solve 4/5-1/7?
Found 2 solutions by Alan3354, stanbon:
Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website!
How do you solve 4/5-1/7?
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It's not solving, but you can subtract.
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4/5-1/7
Find a common denominator. The product always works, 5*7 = 35
4/5-1/7 = 28/35 - 5/35
= 23/35

Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
solve 4/5-1/7
To add or subtract fractions you have to
have them stated with the same denominator.
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Your Problem:
The least common denominator is 5*7 = 35
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Rewrite each fraction with that denominator:
4/5 = 28/35
1/7 = 5/35
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Now you can subtract.
28/35-5/35
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= 23/35
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A faster way to get the same answer is to cross multiply.
Your Problem:
4/5-1/7
= (7*4-5*1)/(5*7) = (28-5)/35 = 23/35
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Cheers,
Stan H.
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