Add 15/35 and 56/90
15/35 + 56/90 is 331/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
15/35 = 15 × 18/35 × 18 = 270/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
56/90 = 56 × 7/90 × 7 = 392/630 - Add the two like fractions:
270/630 + 392/630 = 270 + 392/630 = 662/630 - 662/630 simplified gives 331/315
- So, 15/35 + 56/90 = 331/315
In mixed form: 116/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/35+56/90 15/70+56/90 45/35+56/90 75/35+56/90