Subtract 1/80 from 21/7
1st number: 3 0/7, 2nd number: 1/80
21/7 - 1/80 is 239/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
21/7 = 21 × 80/7 × 80 = 1680/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
1/80 = 1 × 7/80 × 7 = 7/560 - Subtract the two like fractions:
1680/560 - 7/560 = 1680 - 7/560 = 1673/560 - After reducing the fraction, the answer is 239/80
- In mixed form: 279/80
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