Add 7/15 and 40/63
7/15 + 40/63 is 347/315.
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,
7/15 = 7 × 21/15 × 21 = 147/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
40/63 = 40 × 5/63 × 5 = 200/315 - Add the two like fractions:
147/315 + 200/315 = 147 + 200/315 = 347/315 - So, 7/15 + 40/63 = 347/315
In mixed form: 132/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/15+40/63 7/15+80/63 7/30+40/63 21/15+40/63 7/45+40/63 35/15+40/63 7/75+40/63 49/15+40/63