Subtract 12/72 from 9/7
1st number: 1 2/7, 2nd number: 12/72
9/7 - 12/72 is 47/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
9/7 = 9 × 72/7 × 72 = 648/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
12/72 = 12 × 7/72 × 7 = 84/504 - Subtract the two like fractions:
648/504 - 84/504 = 648 - 84/504 = 564/504 - After reducing the fraction, the answer is 47/42
- In mixed form: 15/42
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