Question 588630
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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