Subtract 21/90 from 4/6
4/6 - 21/90 is 13/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
4/6 = 4 × 15/6 × 15 = 60/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Subtract the two like fractions:
60/90 - 21/90 = 60 - 21/90 = 39/90 - After reducing the fraction, the answer is 13/30
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