Subtract 15/90 from 40/14
1st number: 2 12/14, 2nd number: 15/90
40/14 - 15/90 is 113/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 14 × 45 = 630,
40/14 = 40 × 45/14 × 45 = 1800/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
15/90 = 15 × 7/90 × 7 = 105/630 - Subtract the two like fractions:
1800/630 - 105/630 = 1800 - 105/630 = 1695/630 - After reducing the fraction, the answer is 113/42
- In mixed form: 229/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/14-15/90 40/14-30/90 40/28-15/90 40/14-45/90 40/42-15/90 40/14-75/90 40/70-15/90 40/98-15/90