Subtract 90/7 from 35/30
1st number: 1 5/30, 2nd number: 12 6/7
35/30 - 90/7 is -491/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
35/30 = 35 × 7/30 × 7 = 245/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
90/7 = 90 × 30/7 × 30 = 2700/210 - Subtract the two like fractions:
245/210 - 2700/210 = 245 - 2700/210 = -2455/210 - After reducing the fraction, the answer is -491/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30-90/7 35/60-90/7 35/30-90/14 35/90-90/7 35/30-90/21 35/30-90/35 35/30-90/49