Subtract 42/18 from 81/35
1st number: 2 11/35, 2nd number: 2 6/18
81/35 - 42/18 is -2/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
81/35 = 81 × 18/35 × 18 = 1458/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
42/18 = 42 × 35/18 × 35 = 1470/630 - Subtract the two like fractions:
1458/630 - 1470/630 = 1458 - 1470/630 = -12/630 - After reducing the fraction, the answer is -2/105
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