Subtract 20/28 from 70/45
1st number: 1 25/45, 2nd number: 20/28
70/45 - 20/28 is 53/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
70/45 = 70 × 28/45 × 28 = 1960/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
20/28 = 20 × 45/28 × 45 = 900/1260 - Subtract the two like fractions:
1960/1260 - 900/1260 = 1960 - 900/1260 = 1060/1260 - After reducing the fraction, the answer is 53/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45-40/28 70/90-20/28 70/45-20/56 70/45-60/28 70/45-20/84