Add 1/15 and 90/7
1st number: 1/15, 2nd number: 12 6/7
1/15 + 90/7 is 1357/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
1/15 = 1 × 7/15 × 7 = 7/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
90/7 = 90 × 15/7 × 15 = 1350/105 - Add the two like fractions:
7/105 + 1350/105 = 7 + 1350/105 = 1357/105 - So, 1/15 + 90/7 = 1357/105
In mixed form: 1297/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/15+90/7 1/30+90/7 1/15+90/14 3/15+90/7 1/45+90/7 1/15+90/21 5/15+90/7 1/75+90/7 1/15+90/35 7/15+90/7 1/15+90/49