Subtract 7/45 from 81/63
1st number: 1 18/63, 2nd number: 7/45
81/63 - 7/45 is 356/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
81/63 = 81 × 5/63 × 5 = 405/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
7/45 = 7 × 7/45 × 7 = 49/315 - Subtract the two like fractions:
405/315 - 49/315 = 405 - 49/315 = 356/315 - In mixed form: 141/315
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