Answers

Add 90/10 and 60/28

1^st number: 9 0/10, 2^nd number: 2 4/28

90/10 + 60/28 is 78/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 28 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 10 × 14 = 140,
   90/10 = 90 × 14/10 × 14 = 1260/140
3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
   60/28 = 60 × 5/28 × 5 = 300/140
4. Add the two like fractions:
   1260/140 + 300/140 = 1260 + 300/140 = 1560/140
5. 1560/140 simplified gives 78/7
6. So, 90/10 + 60/28 = 78/7
   In mixed form: 111/7

MathStep (Works offline)

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

Related: ⁹⁰/₂₀+⁶⁰/₂₈ ⁹⁰/₁₀+⁶⁰/₅₆ ⁹⁰/₃₀+⁶⁰/₂₈ ⁹⁰/₁₀+⁶⁰/₈₄ ⁹⁰/₅₀+⁶⁰/₂₈ ⁹⁰/₇₀+⁶⁰/₂₈

Add Fractions Calculator