Add 90/36 and 15/80
1st number: 2 18/36, 2nd number: 15/80
90/36 + 15/80 is 43/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 36 × 20 = 720,
90/36 = 90 × 20/36 × 20 = 1800/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
15/80 = 15 × 9/80 × 9 = 135/720 - Add the two like fractions:
1800/720 + 135/720 = 1800 + 135/720 = 1935/720 - 1935/720 simplified gives 43/16
- So, 90/36 + 15/80 = 43/16
In mixed form: 211/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36+30/80 90/72+15/80 90/36+45/80 90/36+75/80