Subtract 28/80 from 70/21
1st number: 3 7/21, 2nd number: 28/80
70/21 - 28/80 is 179/60.
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,
70/21 = 70 × 80/21 × 80 = 5600/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
28/80 = 28 × 21/80 × 21 = 588/1680 - Subtract the two like fractions:
5600/1680 - 588/1680 = 5600 - 588/1680 = 5012/1680 - After reducing the fraction, the answer is 179/60
- In mixed form: 259/60
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