Add 60/80 and 90/72
1st number: 60/80, 2nd number: 1 18/72
60/80 + 90/72 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 72 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
60/80 = 60 × 9/80 × 9 = 540/720 - Likewise, for the 2nd fraction, since 72 × 10 = 720,
90/72 = 90 × 10/72 × 10 = 900/720 - Add the two like fractions:
540/720 + 900/720 = 540 + 900/720 = 1440/720 - 1440/720 simplified gives 2/1
- So, 60/80 + 90/72 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: