Add 15/80 and 1/45
15/80 + 1/45 is 151/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
15/80 = 15 × 9/80 × 9 = 135/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
1/45 = 1 × 16/45 × 16 = 16/720 - Add the two like fractions:
135/720 + 16/720 = 135 + 16/720 = 151/720 - So, 15/80 + 1/45 = 151/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/80+1/45 15/80+2/45 15/80+1/90 45/80+1/45 15/80+3/45 75/80+1/45 15/80+5/45 15/80+7/45