Subtract 21/8 from 45/63
1st number: 45/63, 2nd number: 2 5/8
45/63 - 21/8 is -107/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 8 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
45/63 = 45 × 8/63 × 8 = 360/504 - Likewise, for the 2nd fraction, since 8 × 63 = 504,
21/8 = 21 × 63/8 × 63 = 1323/504 - Subtract the two like fractions:
360/504 - 1323/504 = 360 - 1323/504 = -963/504 - After reducing the fraction, the answer is -107/56
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