Subtract 90/30 from 27/63
1st number: 27/63, 2nd number: 3 0/30
27/63 - 90/30 is -18/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
27/63 = 27 × 10/63 × 10 = 270/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
90/30 = 90 × 21/30 × 21 = 1890/630 - Subtract the two like fractions:
270/630 - 1890/630 = 270 - 1890/630 = -1620/630 - After reducing the fraction, the answer is -18/7
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