Answers

Add 90/56 and 20/45

1^st number: 1 34/56, 2^nd number: 20/45

90/56 + 20/45 is 517/252.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 45 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 56 × 45 = 2520,
   90/56 = 90 × 45/56 × 45 = 4050/2520
3. Likewise, for the 2nd fraction, since 45 × 56 = 2520,
   20/45 = 20 × 56/45 × 56 = 1120/2520
4. Add the two like fractions:
   4050/2520 + 1120/2520 = 4050 + 1120/2520 = 5170/2520
5. 5170/2520 simplified gives 517/252
6. So, 90/56 + 20/45 = 517/252
   In mixed form: 213/252

MathStep (Works offline)

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

Related: ⁹⁰/₅₆+⁴⁰/₄₅ ⁹⁰/₅₆+²⁰/₉₀ ⁹⁰/₅₆+⁶⁰/₄₅

Add Fractions Calculator