Add 15/80 and 9/10
15/80 + 9/10 is 87/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 10 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
15/80 = 15 × 1/80 × 1 = 15/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
9/10 = 9 × 8/10 × 8 = 72/80 - Add the two like fractions:
15/80 + 72/80 = 15 + 72/80 = 87/80 - So, 15/80 + 9/10 = 87/80
In mixed form: 17/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/80+9/10 15/80+18/10 15/80+9/20 45/80+9/10 15/80+27/10 15/80+9/30 75/80+9/10 15/80+45/10 15/80+9/50 15/80+63/10 15/80+9/70