Subtract 20/72 from 90/35
1st number: 2 20/35, 2nd number: 20/72
90/35 - 20/72 is 289/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 35 × 72 = 2520,
90/35 = 90 × 72/35 × 72 = 6480/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
20/72 = 20 × 35/72 × 35 = 700/2520 - Subtract the two like fractions:
6480/2520 - 700/2520 = 6480 - 700/2520 = 5780/2520 - After reducing the fraction, the answer is 289/126
- In mixed form: 237/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/35-40/72 90/70-20/72 90/35-60/72