Add 9/84 and 9/80
9/84 + 9/80 is 123/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 84 × 20 = 1680,
9/84 = 9 × 20/84 × 20 = 180/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
9/80 = 9 × 21/80 × 21 = 189/1680 - Add the two like fractions:
180/1680 + 189/1680 = 180 + 189/1680 = 369/1680 - 369/1680 simplified gives 123/560
- So, 9/84 + 9/80 = 123/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/84+9/80 9/84+18/80 27/84+9/80 9/84+27/80 45/84+9/80 9/84+45/80 63/84+9/80 9/84+63/80