Answers

Add 90/2 and 21/80

1^st number: 45 0/2, 2^nd number: 21/80

90/2 + 21/80 is 3621/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 2 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 2 × 40 = 80,
   90/2 = 90 × 40/2 × 40 = 3600/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   21/80 = 21 × 1/80 × 1 = 21/80
4. Add the two like fractions:
   3600/80 + 21/80 = 3600 + 21/80 = 3621/80
5. So, 90/2 + 21/80 = 3621/80
   In mixed form: 4521/80

MathStep (Works offline)

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

Related: ⁹⁰/₂+⁴²/₈₀ ⁹⁰/₄+²¹/₈₀ ⁹⁰/₂+⁶³/₈₀ ⁹⁰/₆+²¹/₈₀ ⁹⁰/₁₀+²¹/₈₀ ⁹⁰/₁₄+²¹/₈₀

Add Fractions Calculator