Add 28/30 and 63/7, Solve 28/30 + 9 0/7 as a fraction

Add 28/30 and 63/7

1^st number: 28/30, 2^nd number: 9 0/7

28/30 + 63/7 is 149/15.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210
Likewise, for the 2nd fraction, since 7 × 30 = 210,
63/7 = 63 × 30/7 × 30 = 1890/210
Add the two like fractions:
196/210 + 1890/210 = 196 + 1890/210 = 2086/210
2086/210 simplified gives 149/15
So, 28/30 + 63/7 = 149/15
In mixed form: 914/15

MathStep (Works offline)

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