Subtract 7/72 from 72/42
1st number: 1 30/42, 2nd number: 7/72
72/42 - 7/72 is 815/504.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 42 × 12 = 504,
72/42 = 72 × 12/42 × 12 = 864/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
7/72 = 7 × 7/72 × 7 = 49/504 - Subtract the two like fractions:
864/504 - 49/504 = 864 - 49/504 = 815/504 - In mixed form: 1311/504
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