Subtract 27/42 from 20/10
1st number: 2 0/10, 2nd number: 27/42
20/10 - 27/42 is 19/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
20/10 = 20 × 21/10 × 21 = 420/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
27/42 = 27 × 5/42 × 5 = 135/210 - Subtract the two like fractions:
420/210 - 135/210 = 420 - 135/210 = 285/210 - After reducing the fraction, the answer is 19/14
- In mixed form: 15/14
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