Answers

Add 90/20 and 36/48

1^st number: 4 10/20, 2^nd number: 36/48

90/20 + 36/48 is 21/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 48 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 20 × 12 = 240,
   90/20 = 90 × 12/20 × 12 = 1080/240
3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
   36/48 = 36 × 5/48 × 5 = 180/240
4. Add the two like fractions:
   1080/240 + 180/240 = 1080 + 180/240 = 1260/240
5. 1260/240 simplified gives 21/4
6. So, 90/20 + 36/48 = 21/4
   In mixed form: 51/4

MathStep (Works offline)

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

Related: ⁹⁰/₂₀+⁷²/₄₈ ⁹⁰/₄₀+³⁶/₄₈ ⁹⁰/₂₀+³⁶/₉₆ ⁹⁰/₆₀+³⁶/₄₈

Add Fractions Calculator