Add 25/15 and 16/63, Solve 1 10/15 + 16/63 as a fraction

Add 25/15 and 16/63

1^st number: 1 10/15, 2^nd number: 16/63

25/15 + 16/63 is 121/63.

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,
25/15 = 25 × 21/15 × 21 = 525/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
16/63 = 16 × 5/63 × 5 = 80/315
Add the two like fractions:
525/315 + 80/315 = 525 + 80/315 = 605/315
605/315 simplified gives 121/63
So, 25/15 + 16/63 = 121/63
In mixed form: 158/63

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad