Subtract 6/90 from 8/20
8/20 - 6/90 is 1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
8/20 = 8 × 9/20 × 9 = 72/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
6/90 = 6 × 2/90 × 2 = 12/180 - Subtract the two like fractions:
72/180 - 12/180 = 72 - 12/180 = 60/180 - After reducing the fraction, the answer is 1/3
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