Add 98/30 and 15/8, Solve 3 8/30 + 1 7/8 as a fraction

Add 98/30 and 15/8

1^st number: 3 8/30, 2^nd number: 1 7/8

98/30 + 15/8 is 617/120.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 30 × 4 = 120,
98/30 = 98 × 4/30 × 4 = 392/120
Likewise, for the 2nd fraction, since 8 × 15 = 120,
15/8 = 15 × 15/8 × 15 = 225/120
Add the two like fractions:
392/120 + 225/120 = 392 + 225/120 = 617/120
So, 98/30 + 15/8 = 617/120
In mixed form: 517/120

MathStep (Works offline)

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