Add 28/63 and 98/42, Solve 28/63 + 2 14/42 as a fraction

Add 28/63 and 98/42

1^st number: 28/63, 2^nd number: 2 14/42

28/63 + 98/42 is 25/9.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 42 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 63 × 2 = 126,
28/63 = 28 × 2/63 × 2 = 56/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
98/42 = 98 × 3/42 × 3 = 294/126
Add the two like fractions:
56/126 + 294/126 = 56 + 294/126 = 350/126
350/126 simplified gives 25/9
So, 28/63 + 98/42 = 25/9
In mixed form: 27/9

MathStep (Works offline)

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