Answers

Add 42/98 and 54/21

1^st number: 42/98, 2^nd number: 2 12/21

42/98 + 54/21 is 3/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 21 is 294
   
   Next, find the equivalent fraction of both fractional numbers with denominator 294
2. For the 1st fraction, since 98 × 3 = 294,
   42/98 = 42 × 3/98 × 3 = 126/294
3. Likewise, for the 2nd fraction, since 21 × 14 = 294,
   54/21 = 54 × 14/21 × 14 = 756/294
4. Add the two like fractions:
   126/294 + 756/294 = 126 + 756/294 = 882/294
5. 882/294 simplified gives 3/1
6. So, 42/98 + 54/21 = 3/1

MathStep (Works offline)

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

Related: ⁸⁴/₉₈+⁵⁴/₂₁ ⁴²/₉₈+⁵⁴/₄₂ ⁴²/₉₈+⁵⁴/₆₃

Add Fractions Calculator