Subtract 21/90 from 3/16
3/16 - 21/90 is -11/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
3/16 = 3 × 45/16 × 45 = 135/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
21/90 = 21 × 8/90 × 8 = 168/720 - Subtract the two like fractions:
135/720 - 168/720 = 135 - 168/720 = -33/720 - After reducing the fraction, the answer is -11/240
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