Subtract 30/42 from 28/15
1st number: 1 13/15, 2nd number: 30/42
28/15 - 30/42 is 121/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
28/15 = 28 × 14/15 × 14 = 392/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
30/42 = 30 × 5/42 × 5 = 150/210 - Subtract the two like fractions:
392/210 - 150/210 = 392 - 150/210 = 242/210 - After reducing the fraction, the answer is 121/105
- In mixed form: 116/105
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