Subtract 1/10 from 27/42
27/42 - 1/10 is 19/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
27/42 = 27 × 5/42 × 5 = 135/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
1/10 = 1 × 21/10 × 21 = 21/210 - Subtract the two like fractions:
135/210 - 21/210 = 135 - 21/210 = 114/210 - After reducing the fraction, the answer is 19/35
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