Subtract 5/7 from 25/90
25/90 - 5/7 is -55/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
25/90 = 25 × 7/90 × 7 = 175/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
5/7 = 5 × 90/7 × 90 = 450/630 - Subtract the two like fractions:
175/630 - 450/630 = 175 - 450/630 = -275/630 - After reducing the fraction, the answer is -55/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/90-5/7 25/90-10/7 25/90-5/14 75/90-5/7 25/90-15/7 25/90-5/21 25/90-25/7 25/90-5/35 25/90-35/7 25/90-5/49