Subtract 45/40 from 90/14
1st number: 6 6/14, 2nd number: 1 5/40
90/14 - 45/40 is 297/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
90/14 = 90 × 20/14 × 20 = 1800/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
45/40 = 45 × 7/40 × 7 = 315/280 - Subtract the two like fractions:
1800/280 - 315/280 = 1800 - 315/280 = 1485/280 - After reducing the fraction, the answer is 297/56
- In mixed form: 517/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/14-90/40 90/28-45/40 90/14-45/80 90/42-45/40 90/70-45/40 90/98-45/40