Subtract 30/7 from 90/63
1st number: 1 27/63, 2nd number: 4 2/7
90/63 - 30/7 is -20/7.
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,
90/63 = 90 × 1/63 × 1 = 90/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
30/7 = 30 × 9/7 × 9 = 270/63 - Subtract the two like fractions:
90/63 - 270/63 = 90 - 270/63 = -180/63 - After reducing the fraction, the answer is -20/7
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