Add 6/80 and 15/7, Solve 6/80 + 2 1/7 as a fraction

Add 6/80 and 15/7

1^st number: 6/80, 2^nd number: 2 1/7

6/80 + 15/7 is 621/280.

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

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 80 × 7 = 560,
6/80 = 6 × 7/80 × 7 = 42/560
Likewise, for the 2nd fraction, since 7 × 80 = 560,
15/7 = 15 × 80/7 × 80 = 1200/560
Add the two like fractions:
42/560 + 1200/560 = 42 + 1200/560 = 1242/560
1242/560 simplified gives 621/280
So, 6/80 + 15/7 = 621/280
In mixed form: 261/280

MathStep (Works offline)

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