Subtract 30/7 from 72/12
1st number: 6 0/12, 2nd number: 4 2/7
72/12 - 30/7 is 12/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
72/12 = 72 × 7/12 × 7 = 504/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
30/7 = 30 × 12/7 × 12 = 360/84 - Subtract the two like fractions:
504/84 - 360/84 = 504 - 360/84 = 144/84 - After reducing the fraction, the answer is 12/7
- In mixed form: 15/7
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