Add 7/49 and 70/80
7/49 + 70/80 is 57/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 49 × 80 = 3920,
7/49 = 7 × 80/49 × 80 = 560/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
70/80 = 70 × 49/80 × 49 = 3430/3920 - Add the two like fractions:
560/3920 + 3430/3920 = 560 + 3430/3920 = 3990/3920 - 3990/3920 simplified gives 57/56
- So, 7/49 + 70/80 = 57/56
In mixed form: 11/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/49+70/80 7/98+70/80 21/49+70/80 35/49+70/80