Subtract 7/30 from 42/15
1st number: 2 12/15, 2nd number: 7/30
42/15 - 7/30 is 77/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
42/15 = 42 × 2/15 × 2 = 84/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
7/30 = 7 × 1/30 × 1 = 7/30 - Subtract the two like fractions:
84/30 - 7/30 = 84 - 7/30 = 77/30 - In mixed form: 217/30
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