Add 28/98 and 8/7, Solve 28/98 + 1 1/7 as a fraction

Add 28/98 and 8/7

1^st number: 28/98, 2^nd number: 1 1/7

28/98 + 8/7 is 10/7.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 7 is 98

Next, find the equivalent fraction of both fractional numbers with denominator 98
For the 1st fraction, since 98 × 1 = 98,
28/98 = 28 × 1/98 × 1 = 28/98
Likewise, for the 2nd fraction, since 7 × 14 = 98,
8/7 = 8 × 14/7 × 14 = 112/98
Add the two like fractions:
28/98 + 112/98 = 28 + 112/98 = 140/98
140/98 simplified gives 10/7
So, 28/98 + 8/7 = 10/7
In mixed form: 13/7

MathStep (Works offline)

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