Add 20/96 and 80/90
20/96 + 80/90 is 79/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 96 and 90 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 96 × 15 = 1440,
20/96 = 20 × 15/96 × 15 = 300/1440 - Likewise, for the 2nd fraction, since 90 × 16 = 1440,
80/90 = 80 × 16/90 × 16 = 1280/1440 - Add the two like fractions:
300/1440 + 1280/1440 = 300 + 1280/1440 = 1580/1440 - 1580/1440 simplified gives 79/72
- So, 20/96 + 80/90 = 79/72
In mixed form: 17/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/96+80/90 60/96+80/90