Answers

Add 98/60 and 18/21

1^st number: 1 38/60, 2^nd number: 18/21

98/60 + 18/21 is 523/210.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 21 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 60 × 7 = 420,
   98/60 = 98 × 7/60 × 7 = 686/420
3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
   18/21 = 18 × 20/21 × 20 = 360/420
4. Add the two like fractions:
   686/420 + 360/420 = 686 + 360/420 = 1046/420
5. 1046/420 simplified gives 523/210
6. So, 98/60 + 18/21 = 523/210
   In mixed form: 2103/210

MathStep (Works offline)

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

Related: ⁹⁸/₆₀+³⁶/₂₁ ⁹⁸/₆₀+¹⁸/₄₂ ⁹⁸/₆₀+⁵⁴/₂₁ ⁹⁸/₆₀+¹⁸/₆₃ ⁹⁸/₆₀+⁹⁰/₂₁

Add Fractions Calculator