Subtract 84/90 from 3/20
3/20 - 84/90 is -47/60.
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,
3/20 = 3 × 9/20 × 9 = 27/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
84/90 = 84 × 2/90 × 2 = 168/180 - Subtract the two like fractions:
27/180 - 168/180 = 27 - 168/180 = -141/180 - After reducing the fraction, the answer is -47/60
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