Answers

Add 90/18 and 72/8

1^st number: 5 0/18, 2^nd number: 9 0/8

90/18 + 72/8 is 14/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 8 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 18 × 4 = 72,
   90/18 = 90 × 4/18 × 4 = 360/72
3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
   72/8 = 72 × 9/8 × 9 = 648/72
4. Add the two like fractions:
   360/72 + 648/72 = 360 + 648/72 = 1008/72
5. 1008/72 simplified gives 14/1
6. So, 90/18 + 72/8 = 14/1

MathStep (Works offline)

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

Related: ⁹⁰/₃₆+⁷²/₈ ⁹⁰/₁₈+⁷²/₁₆ ⁹⁰/₅₄+⁷²/₈ ⁹⁰/₁₈+⁷²/₂₄ ⁹⁰/₁₈+⁷²/₄₀ ⁹⁰/₁₈+⁷²/₅₆

Add Fractions Calculator