Add 28/63 and 7/15
28/63 + 7/15 is 41/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 15 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
28/63 = 28 × 5/63 × 5 = 140/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
7/15 = 7 × 21/15 × 21 = 147/315 - Add the two like fractions:
140/315 + 147/315 = 140 + 147/315 = 287/315 - 287/315 simplified gives 41/45
- So, 28/63 + 7/15 = 41/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63+7/15 28/63+14/15 28/63+7/30 84/63+7/15 28/63+21/15 28/63+7/45 28/63+35/15 28/63+7/75 28/63+49/15