Subtract 90/63 from 45/56
1st number: 45/56, 2nd number: 1 27/63
45/56 - 90/63 is -5/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 63 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
45/56 = 45 × 9/56 × 9 = 405/504 - Likewise, for the 2nd fraction, since 63 × 8 = 504,
90/63 = 90 × 8/63 × 8 = 720/504 - Subtract the two like fractions:
405/504 - 720/504 = 405 - 720/504 = -315/504 - After reducing the fraction, the answer is -5/8
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Related: 90/56-90/63