Subtract 15/50 from 70/45
1st number: 1 25/45, 2nd number: 15/50
70/45 - 15/50 is 113/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 45 × 10 = 450,
70/45 = 70 × 10/45 × 10 = 700/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
15/50 = 15 × 9/50 × 9 = 135/450 - Subtract the two like fractions:
700/450 - 135/450 = 700 - 135/450 = 565/450 - After reducing the fraction, the answer is 113/90
- In mixed form: 123/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45-30/50 70/90-15/50 70/45-45/50 70/45-75/50