Add 25/7 and 9/80, Solve 3 4/7 + 9/80 as a fraction

Add 25/7 and 9/80

1^st number: 3 4/7, 2^nd number: 9/80

25/7 + 9/80 is 2063/560.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 7 × 80 = 560,
25/7 = 25 × 80/7 × 80 = 2000/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
9/80 = 9 × 7/80 × 7 = 63/560
Add the two like fractions:
2000/560 + 63/560 = 2000 + 63/560 = 2063/560
So, 25/7 + 9/80 = 2063/560
In mixed form: 3383/560

MathStep (Works offline)

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