Add 10/15 and 84/63
1st number: 10/15, 2nd number: 1 21/63
10/15 + 84/63 is 2/1.
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,
10/15 = 10 × 21/15 × 21 = 210/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
84/63 = 84 × 5/63 × 5 = 420/315 - Add the two like fractions:
210/315 + 420/315 = 210 + 420/315 = 630/315 - 630/315 simplified gives 2/1
- So, 10/15 + 84/63 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/15+84/63 10/30+84/63 30/15+84/63 10/45+84/63 50/15+84/63 10/75+84/63 70/15+84/63