Subtract 70/63 from 15/5
1st number: 3 0/5, 2nd number: 1 7/63
15/5 - 70/63 is 17/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 5 × 63 = 315,
15/5 = 15 × 63/5 × 63 = 945/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
70/63 = 70 × 5/63 × 5 = 350/315 - Subtract the two like fractions:
945/315 - 350/315 = 945 - 350/315 = 595/315 - After reducing the fraction, the answer is 17/9
- In mixed form: 18/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/5-70/63 15/10-70/63 45/5-70/63 75/5-70/63 15/25-70/63 15/35-70/63