Subtract 30/14 from 45/40
1st number: 1 5/40, 2nd number: 2 2/14
45/40 - 30/14 is -57/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 14 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
45/40 = 45 × 7/40 × 7 = 315/280 - Likewise, for the 2nd fraction, since 14 × 20 = 280,
30/14 = 30 × 20/14 × 20 = 600/280 - Subtract the two like fractions:
315/280 - 600/280 = 315 - 600/280 = -285/280 - After reducing the fraction, the answer is -57/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40-30/14 45/40-60/14 45/80-30/14 45/40-30/28 45/40-90/14 45/40-30/42 45/40-30/70 45/40-30/98