Subtract 6/72 from 84/21
1st number: 4 0/21, 2nd number: 6/72
84/21 - 6/72 is 47/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
84/21 = 84 × 24/21 × 24 = 2016/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
6/72 = 6 × 7/72 × 7 = 42/504 - Subtract the two like fractions:
2016/504 - 42/504 = 2016 - 42/504 = 1974/504 - After reducing the fraction, the answer is 47/12
- In mixed form: 311/12
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