Add 80/90 and 15/16
80/90 + 15/16 is 263/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
80/90 = 80 × 8/90 × 8 = 640/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
15/16 = 15 × 45/16 × 45 = 675/720 - Add the two like fractions:
640/720 + 675/720 = 640 + 675/720 = 1315/720 - 1315/720 simplified gives 263/144
- So, 80/90 + 15/16 = 263/144
In mixed form: 1119/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+30/16 80/90+15/32 80/90+45/16 80/90+15/48 80/90+75/16 80/90+15/80