Subtract 80/60 from 10/21
1st number: 10/21, 2nd number: 1 20/60
10/21 - 80/60 is -6/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
10/21 = 10 × 20/21 × 20 = 200/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
80/60 = 80 × 7/60 × 7 = 560/420 - Subtract the two like fractions:
200/420 - 560/420 = 200 - 560/420 = -360/420 - After reducing the fraction, the answer is -6/7
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