Subtract 7/32 from 21/90
21/90 - 7/32 is 7/480.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 32 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 90 × 16 = 1440,
21/90 = 21 × 16/90 × 16 = 336/1440 - Likewise, for the 2nd fraction, since 32 × 45 = 1440,
7/32 = 7 × 45/32 × 45 = 315/1440 - Subtract the two like fractions:
336/1440 - 315/1440 = 336 - 315/1440 = 21/1440 - After reducing the fraction, the answer is 7/480
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