Subtract 60/90 from 9/7
1st number: 1 2/7, 2nd number: 60/90
9/7 - 60/90 is 13/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
9/7 = 9 × 90/7 × 90 = 810/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
60/90 = 60 × 7/90 × 7 = 420/630 - Subtract the two like fractions:
810/630 - 420/630 = 810 - 420/630 = 390/630 - After reducing the fraction, the answer is 13/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7-60/90 9/14-60/90 27/7-60/90 9/21-60/90 45/7-60/90 9/35-60/90 63/7-60/90 9/49-60/90