Subtract 21/90 from 16/30
16/30 - 21/90 is 3/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
16/30 = 16 × 3/30 × 3 = 48/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Subtract the two like fractions:
48/90 - 21/90 = 48 - 21/90 = 27/90 - After reducing the fraction, the answer is 3/10
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