Add 3/15 and 90/63
1st number: 3/15, 2nd number: 1 27/63
3/15 + 90/63 is 57/35.
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,
3/15 = 3 × 21/15 × 21 = 63/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
90/63 = 90 × 5/63 × 5 = 450/315 - Add the two like fractions:
63/315 + 450/315 = 63 + 450/315 = 513/315 - 513/315 simplified gives 57/35
- So, 3/15 + 90/63 = 57/35
In mixed form: 122/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15+90/63 3/30+90/63 9/15+90/63 3/45+90/63 3/75+90/63 21/15+90/63