Subtract 7/80 from 80/21
1st number: 3 17/21, 2nd number: 7/80
80/21 - 7/80 is 6253/1680.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
80/21 = 80 × 80/21 × 80 = 6400/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
7/80 = 7 × 21/80 × 21 = 147/1680 - Subtract the two like fractions:
6400/1680 - 147/1680 = 6400 - 147/1680 = 6253/1680 - In mixed form: 31213/1680
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