Add 90/15 and 10/8
1st number: 6 0/15, 2nd number: 1 2/8
90/15 + 10/8 is 29/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
90/15 = 90 × 8/15 × 8 = 720/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
10/8 = 10 × 15/8 × 15 = 150/120 - Add the two like fractions:
720/120 + 150/120 = 720 + 150/120 = 870/120 - 870/120 simplified gives 29/4
- So, 90/15 + 10/8 = 29/4
In mixed form: 71/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+20/8 90/30+10/8 90/15+10/16 90/15+30/8 90/45+10/8 90/15+10/24 90/15+50/8 90/75+10/8 90/15+10/40 90/15+70/8 90/15+10/56