Subtract 9/80 from 50/21
1st number: 2 8/21, 2nd number: 9/80
50/21 - 9/80 is 3811/1680.
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,
50/21 = 50 × 80/21 × 80 = 4000/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
9/80 = 9 × 21/80 × 21 = 189/1680 - Subtract the two like fractions:
4000/1680 - 189/1680 = 4000 - 189/1680 = 3811/1680 - In mixed form: 2451/1680
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