Subtract 32/42 from 45/3
1st number: 15 0/3, 2nd number: 32/42
45/3 - 32/42 is 299/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 3 × 14 = 42,
45/3 = 45 × 14/3 × 14 = 630/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
32/42 = 32 × 1/42 × 1 = 32/42 - Subtract the two like fractions:
630/42 - 32/42 = 630 - 32/42 = 598/42 - After reducing the fraction, the answer is 299/21
- In mixed form: 145/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/3-32/42 45/3-64/42 45/6-32/42 45/3-32/84 45/3-96/42 45/9-32/42 45/15-32/42 45/21-32/42