Add 12/15 and 7/63
12/15 + 7/63 is 41/45.
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,
12/15 = 12 × 21/15 × 21 = 252/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
7/63 = 7 × 5/63 × 5 = 35/315 - Add the two like fractions:
252/315 + 35/315 = 252 + 35/315 = 287/315 - 287/315 simplified gives 41/45
- So, 12/15 + 7/63 = 41/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+7/63 12/15+14/63 12/30+7/63 36/15+7/63 12/15+21/63 12/45+7/63 60/15+7/63 12/15+35/63 12/75+7/63 84/15+7/63 12/15+49/63