Answers

Add 81/90 and 70/8

1^st number: 81/90, 2^nd number: 8 6/8

81/90 + 70/8 is 193/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 8 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 90 × 4 = 360,
   81/90 = 81 × 4/90 × 4 = 324/360
3. Likewise, for the 2nd fraction, since 8 × 45 = 360,
   70/8 = 70 × 45/8 × 45 = 3150/360
4. Add the two like fractions:
   324/360 + 3150/360 = 324 + 3150/360 = 3474/360
5. 3474/360 simplified gives 193/20
6. So, 81/90 + 70/8 = 193/20
   In mixed form: 913/20

MathStep (Works offline)

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

Related: ⁸¹/₉₀+⁷⁰/₁₆ ⁸¹/₉₀+⁷⁰/₂₄ ⁸¹/₉₀+⁷⁰/₄₀ ⁸¹/₉₀+⁷⁰/₅₆

Add Fractions Calculator