Subtract 42/27 from 20/90
1st number: 20/90, 2nd number: 1 15/27
20/90 - 42/27 is -4/3.
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,
20/90 = 20 × 3/90 × 3 = 60/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
42/27 = 42 × 10/27 × 10 = 420/270 - Subtract the two like fractions:
60/270 - 420/270 = 60 - 420/270 = -360/270 - After reducing the fraction, the answer is -4/3
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