Subtract 30/63 from 70/15
1st number: 4 10/15, 2nd number: 30/63
70/15 - 30/63 is 88/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
70/15 = 70 × 21/15 × 21 = 1470/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
30/63 = 30 × 5/63 × 5 = 150/315 - Subtract the two like fractions:
1470/315 - 150/315 = 1470 - 150/315 = 1320/315 - After reducing the fraction, the answer is 88/21
- In mixed form: 44/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15-60/63 70/30-30/63 70/15-90/63 70/45-30/63 70/75-30/63