Subtract 72/7 from 75/30
1st number: 2 15/30, 2nd number: 10 2/7
75/30 - 72/7 is -109/14.
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,
75/30 = 75 × 7/30 × 7 = 525/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
72/7 = 72 × 30/7 × 30 = 2160/210 - Subtract the two like fractions:
525/210 - 2160/210 = 525 - 2160/210 = -1635/210 - After reducing the fraction, the answer is -109/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/60-72/7 75/30-72/14 75/90-72/7 75/30-72/21 75/30-72/35 75/30-72/49