Add 5/80 and 10/90
5/80 + 10/90 is 25/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
5/80 = 5 × 9/80 × 9 = 45/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
10/90 = 10 × 8/90 × 8 = 80/720 - Add the two like fractions:
45/720 + 80/720 = 45 + 80/720 = 125/720 - 125/720 simplified gives 25/144
- So, 5/80 + 10/90 = 25/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/80+10/90 5/80+20/90 15/80+10/90 5/80+30/90 25/80+10/90 5/80+50/90 35/80+10/90 5/80+70/90