Subtract 21/80 from 72/49
1st number: 1 23/49, 2nd number: 21/80
72/49 - 21/80 is 4731/3920.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 49 × 80 = 3920,
72/49 = 72 × 80/49 × 80 = 5760/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
21/80 = 21 × 49/80 × 49 = 1029/3920 - Subtract the two like fractions:
5760/3920 - 1029/3920 = 5760 - 1029/3920 = 4731/3920 - In mixed form: 1811/3920
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