Subtract 45/32 from 9/21
1st number: 9/21, 2nd number: 1 13/32
9/21 - 45/32 is -219/224.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
9/21 = 9 × 32/21 × 32 = 288/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
45/32 = 45 × 21/32 × 21 = 945/672 - Subtract the two like fractions:
288/672 - 945/672 = 288 - 945/672 = -657/672 - After reducing the fraction, the answer is -219/224
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21-45/32 9/21-90/32 9/42-45/32 9/21-45/64 27/21-45/32 9/63-45/32 9/21-45/96 45/21-45/32 63/21-45/32