Add 63/14 and 9/80, Solve 4 7/14 + 9/80 as a fraction

Add 63/14 and 9/80

1^st number: 4 7/14, 2^nd number: 9/80

63/14 + 9/80 is 369/80.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 80 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 14 × 40 = 560,
63/14 = 63 × 40/14 × 40 = 2520/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
9/80 = 9 × 7/80 × 7 = 63/560
Add the two like fractions:
2520/560 + 63/560 = 2520 + 63/560 = 2583/560
2583/560 simplified gives 369/80
So, 63/14 + 9/80 = 369/80
In mixed form: 449/80

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad