Add 10/8 and 90/15
1st number: 1 2/8, 2nd number: 6 0/15
10/8 + 90/15 is 29/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
10/8 = 10 × 15/8 × 15 = 150/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
90/15 = 90 × 8/15 × 8 = 720/120 - Add the two like fractions:
150/120 + 720/120 = 150 + 720/120 = 870/120 - 870/120 simplified gives 29/4
- So, 10/8 + 90/15 = 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: 20/8+90/15 10/16+90/15 10/8+90/30 30/8+90/15 10/24+90/15 10/8+90/45 50/8+90/15 10/40+90/15 10/8+90/75 70/8+90/15 10/56+90/15