Answers

Add 90/20 and 72/32

1^st number: 4 10/20, 2^nd number: 2 8/32

90/20 + 72/32 is 27/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 32 is 160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 160
2. For the 1st fraction, since 20 × 8 = 160,
   90/20 = 90 × 8/20 × 8 = 720/160
3. Likewise, for the 2nd fraction, since 32 × 5 = 160,
   72/32 = 72 × 5/32 × 5 = 360/160
4. Add the two like fractions:
   720/160 + 360/160 = 720 + 360/160 = 1080/160
5. 1080/160 simplified gives 27/4
6. So, 90/20 + 72/32 = 27/4
   In mixed form: 63/4

MathStep (Works offline)

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

Related: ⁹⁰/₄₀+⁷²/₃₂ ⁹⁰/₂₀+⁷²/₆₄ ⁹⁰/₆₀+⁷²/₃₂ ⁹⁰/₂₀+⁷²/₉₆

Add Fractions Calculator