Answers

Add 90/36 and 30/72

1^st number: 2 18/36, 2^nd number: 30/72

90/36 + 30/72 is 35/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 72 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 36 × 2 = 72,
   90/36 = 90 × 2/36 × 2 = 180/72
3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
   30/72 = 30 × 1/72 × 1 = 30/72
4. Add the two like fractions:
   180/72 + 30/72 = 180 + 30/72 = 210/72
5. 210/72 simplified gives 35/12
6. So, 90/36 + 30/72 = 35/12
   In mixed form: 211/12

MathStep (Works offline)

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

Related: ⁹⁰/₃₆+⁶⁰/₇₂ ⁹⁰/₇₂+³⁰/₇₂ ⁹⁰/₃₆+⁹⁰/₇₂

Add Fractions Calculator