Subtract 1/21 from 70/63
1st number: 1 7/63, 2nd number: 1/21
70/63 - 1/21 is 67/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
70/63 = 70 × 1/63 × 1 = 70/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
1/21 = 1 × 3/21 × 3 = 3/63 - Subtract the two like fractions:
70/63 - 3/63 = 70 - 3/63 = 67/63 - In mixed form: 14/63
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