Add 56/35 and 20/90
1st number: 1 21/35, 2nd number: 20/90
56/35 + 20/90 is 82/45.
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,
56/35 = 56 × 18/35 × 18 = 1008/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Add the two like fractions:
1008/630 + 140/630 = 1008 + 140/630 = 1148/630 - 1148/630 simplified gives 82/45
- So, 56/35 + 20/90 = 82/45
In mixed form: 137/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/35+40/90 56/70+20/90 56/35+60/90