Subtract 21/80 from 7/4
1st number: 1 3/4, 2nd number: 21/80
7/4 - 21/80 is 119/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
7/4 = 7 × 20/4 × 20 = 140/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
21/80 = 21 × 1/80 × 1 = 21/80 - Subtract the two like fractions:
140/80 - 21/80 = 140 - 21/80 = 119/80 - In mixed form: 139/80
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