Subtract 30/32 from 21/45
21/45 - 30/32 is -113/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 32 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 45 × 32 = 1440,
21/45 = 21 × 32/45 × 32 = 672/1440 - Likewise, for the 2nd fraction, since 32 × 45 = 1440,
30/32 = 30 × 45/32 × 45 = 1350/1440 - Subtract the two like fractions:
672/1440 - 1350/1440 = 672 - 1350/1440 = -678/1440 - After reducing the fraction, the answer is -113/240
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