Add 9/28 and 70/80
9/28 + 70/80 is 67/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
9/28 = 9 × 20/28 × 20 = 180/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
70/80 = 70 × 7/80 × 7 = 490/560 - Add the two like fractions:
180/560 + 490/560 = 180 + 490/560 = 670/560 - 670/560 simplified gives 67/56
- So, 9/28 + 70/80 = 67/56
In mixed form: 111/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28+70/80 9/56+70/80 27/28+70/80 9/84+70/80 45/28+70/80 63/28+70/80