Subtract 30/72 from 42/12
1st number: 3 6/12, 2nd number: 30/72
42/12 - 30/72 is 37/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
42/12 = 42 × 6/12 × 6 = 252/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
30/72 = 30 × 1/72 × 1 = 30/72 - Subtract the two like fractions:
252/72 - 30/72 = 252 - 30/72 = 222/72 - After reducing the fraction, the answer is 37/12
- In mixed form: 31/12
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