Answers

Add 50/70 and 90/12

1^st number: 50/70, 2^nd number: 7 6/12

50/70 + 90/12 is 115/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 12 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 70 × 6 = 420,
   50/70 = 50 × 6/70 × 6 = 300/420
3. Likewise, for the 2nd fraction, since 12 × 35 = 420,
   90/12 = 90 × 35/12 × 35 = 3150/420
4. Add the two like fractions:
   300/420 + 3150/420 = 300 + 3150/420 = 3450/420
5. 3450/420 simplified gives 115/14
6. So, 50/70 + 90/12 = 115/14
   In mixed form: 83/14

MathStep (Works offline)

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

Related: ⁵⁰/₇₀+⁹⁰/₂₄ ⁵⁰/₇₀+⁹⁰/₃₆ ⁵⁰/₇₀+⁹⁰/₆₀ ⁵⁰/₇₀+⁹⁰/₈₄

Add Fractions Calculator