Subtract 28/7 from 80/15
1st number: 5 5/15, 2nd number: 4 0/7
80/15 - 28/7 is 4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
80/15 = 80 × 7/15 × 7 = 560/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
28/7 = 28 × 15/7 × 15 = 420/105 - Subtract the two like fractions:
560/105 - 420/105 = 560 - 420/105 = 140/105 - After reducing the fraction, the answer is 4/3
- In mixed form: 11/3
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