Subtract 75/70 from 14/90
1st number: 14/90, 2nd number: 1 5/70
14/90 - 75/70 is -577/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
14/90 = 14 × 7/90 × 7 = 98/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
75/70 = 75 × 9/70 × 9 = 675/630 - Subtract the two like fractions:
98/630 - 675/630 = 98 - 675/630 = -577/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/90-75/70 42/90-75/70 70/90-75/70 98/90-75/70