Subtract 40/42 from 27/15
1st number: 1 12/15, 2nd number: 40/42
27/15 - 40/42 is 89/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
27/15 = 27 × 14/15 × 14 = 378/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
40/42 = 40 × 5/42 × 5 = 200/210 - Subtract the two like fractions:
378/210 - 200/210 = 378 - 200/210 = 178/210 - After reducing the fraction, the answer is 89/105
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