Add 8/80 and 15/90
8/80 + 15/90 is 4/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
8/80 = 8 × 9/80 × 9 = 72/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
15/90 = 15 × 8/90 × 8 = 120/720 - Add the two like fractions:
72/720 + 120/720 = 72 + 120/720 = 192/720 - 192/720 simplified gives 4/15
- So, 8/80 + 15/90 = 4/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/80+15/90 8/80+30/90 24/80+15/90 8/80+45/90 40/80+15/90 8/80+75/90 56/80+15/90