Add 9/12 and 9/80
9/12 + 9/80 is 69/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
9/12 = 9 × 20/12 × 20 = 180/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
9/80 = 9 × 3/80 × 3 = 27/240 - Add the two like fractions:
180/240 + 27/240 = 180 + 27/240 = 207/240 - 207/240 simplified gives 69/80
- So, 9/12 + 9/80 = 69/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12+9/80 9/12+18/80 9/24+9/80 27/12+9/80 9/12+27/80 9/36+9/80 45/12+9/80 9/12+45/80 9/60+9/80 63/12+9/80 9/12+63/80 9/84+9/80