Add 90/16 and 20/90
1st number: 5 10/16, 2nd number: 20/90
90/16 + 20/90 is 421/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
90/16 = 90 × 45/16 × 45 = 4050/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
20/90 = 20 × 8/90 × 8 = 160/720 - Add the two like fractions:
4050/720 + 160/720 = 4050 + 160/720 = 4210/720 - 4210/720 simplified gives 421/72
- So, 90/16 + 20/90 = 421/72
In mixed form: 561/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/16+40/90 90/32+20/90 90/16+60/90 90/48+20/90 90/80+20/90