Subtract 27/15 from 25/42
1st number: 25/42, 2nd number: 1 12/15
25/42 - 27/15 is -253/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
25/42 = 25 × 5/42 × 5 = 125/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
27/15 = 27 × 14/15 × 14 = 378/210 - Subtract the two like fractions:
125/210 - 378/210 = 125 - 378/210 = -253/210
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