Answers

Add 80/10 and 40/56

1^st number: 8 0/10, 2^nd number: 40/56

80/10 + 40/56 is 61/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 56 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 10 × 28 = 280,
   80/10 = 80 × 28/10 × 28 = 2240/280
3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
   40/56 = 40 × 5/56 × 5 = 200/280
4. Add the two like fractions:
   2240/280 + 200/280 = 2240 + 200/280 = 2440/280
5. 2440/280 simplified gives 61/7
6. So, 80/10 + 40/56 = 61/7
   In mixed form: 85/7

MathStep (Works offline)

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

Related: ⁸⁰/₁₀+⁸⁰/₅₆ ⁸⁰/₂₀+⁴⁰/₅₆ ⁸⁰/₃₀+⁴⁰/₅₆ ⁸⁰/₅₀+⁴⁰/₅₆ ⁸⁰/₇₀+⁴⁰/₅₆

Add Fractions Calculator