Subtract 42/45 from 81/35
1st number: 2 11/35, 2nd number: 42/45
81/35 - 42/45 is 29/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
81/35 = 81 × 9/35 × 9 = 729/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
42/45 = 42 × 7/45 × 7 = 294/315 - Subtract the two like fractions:
729/315 - 294/315 = 729 - 294/315 = 435/315 - After reducing the fraction, the answer is 29/21
- In mixed form: 18/21
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