Subtract 90/4 from 21/63
1st number: 21/63, 2nd number: 22 2/4
21/63 - 90/4 is -133/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 4 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
21/63 = 21 × 4/63 × 4 = 84/252 - Likewise, for the 2nd fraction, since 4 × 63 = 252,
90/4 = 90 × 63/4 × 63 = 5670/252 - Subtract the two like fractions:
84/252 - 5670/252 = 84 - 5670/252 = -5586/252 - After reducing the fraction, the answer is -133/6
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