Subtract 21/63 from 12/8
1st number: 1 4/8, 2nd number: 21/63
12/8 - 21/63 is 7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 8 × 63 = 504,
12/8 = 12 × 63/8 × 63 = 756/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
21/63 = 21 × 8/63 × 8 = 168/504 - Subtract the two like fractions:
756/504 - 168/504 = 756 - 168/504 = 588/504 - After reducing the fraction, the answer is 7/6
- In mixed form: 11/6
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