Subtract 9/7 from 30/63
1st number: 30/63, 2nd number: 1 2/7
30/63 - 9/7 is -17/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
30/63 = 30 × 1/63 × 1 = 30/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
9/7 = 9 × 9/7 × 9 = 81/63 - Subtract the two like fractions:
30/63 - 81/63 = 30 - 81/63 = -51/63 - After reducing the fraction, the answer is -17/21
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