Subtract 20/27 from 9/90
9/90 - 20/27 is -173/270.
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,
9/90 = 9 × 3/90 × 3 = 27/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
20/27 = 20 × 10/27 × 10 = 200/270 - Subtract the two like fractions:
27/270 - 200/270 = 27 - 200/270 = -173/270
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