Add 70/15 and 15/63
1st number: 4 10/15, 2nd number: 15/63
70/15 + 15/63 is 103/21.
Steps for adding 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,
15/63 = 15 × 5/63 × 5 = 75/315 - Add the two like fractions:
1470/315 + 75/315 = 1470 + 75/315 = 1545/315 - 1545/315 simplified gives 103/21
- So, 70/15 + 15/63 = 103/21
In mixed form: 419/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15+30/63 70/30+15/63 70/15+45/63 70/45+15/63 70/15+75/63 70/75+15/63