Add 70/98 and 63/80
70/98 + 63/80 is 841/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 98 × 40 = 3920,
70/98 = 70 × 40/98 × 40 = 2800/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
63/80 = 63 × 49/80 × 49 = 3087/3920 - Add the two like fractions:
2800/3920 + 3087/3920 = 2800 + 3087/3920 = 5887/3920 - 5887/3920 simplified gives 841/560
- So, 70/98 + 63/80 = 841/560
In mixed form: 1281/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: