Subtract 16/90 from 21/32
21/32 - 16/90 is 689/1440.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 90 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 32 × 45 = 1440,
21/32 = 21 × 45/32 × 45 = 945/1440 - Likewise, for the 2nd fraction, since 90 × 16 = 1440,
16/90 = 16 × 16/90 × 16 = 256/1440 - Subtract the two like fractions:
945/1440 - 256/1440 = 945 - 256/1440 = 689/1440
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