Subtract 20/30 from 45/14
1st number: 3 3/14, 2nd number: 20/30
45/14 - 20/30 is 107/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
45/14 = 45 × 15/14 × 15 = 675/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
20/30 = 20 × 7/30 × 7 = 140/210 - Subtract the two like fractions:
675/210 - 140/210 = 675 - 140/210 = 535/210 - After reducing the fraction, the answer is 107/42
- In mixed form: 223/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/14-20/30 45/14-40/30 45/28-20/30 45/14-20/60 45/14-60/30 45/42-20/30 45/14-20/90 45/70-20/30 45/98-20/30