Add 15/90 and 35/80
15/90 + 35/80 is 29/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
15/90 = 15 × 8/90 × 8 = 120/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
35/80 = 35 × 9/80 × 9 = 315/720 - Add the two like fractions:
120/720 + 315/720 = 120 + 315/720 = 435/720 - 435/720 simplified gives 29/48
- So, 15/90 + 35/80 = 29/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/90+35/80 15/90+70/80 45/90+35/80 75/90+35/80