Subtract 42/27 from 75/90
1st number: 75/90, 2nd number: 1 15/27
75/90 - 42/27 is -13/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
75/90 = 75 × 3/90 × 3 = 225/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
42/27 = 42 × 10/27 × 10 = 420/270 - Subtract the two like fractions:
225/270 - 420/270 = 225 - 420/270 = -195/270 - After reducing the fraction, the answer is -13/18
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