Answers

Add 18/98 and 42/40

1^st number: 18/98, 2^nd number: 1 2/40

18/98 + 42/40 is 1209/980.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 40 is 1960
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1960
2. For the 1st fraction, since 98 × 20 = 1960,
   18/98 = 18 × 20/98 × 20 = 360/1960
3. Likewise, for the 2nd fraction, since 40 × 49 = 1960,
   42/40 = 42 × 49/40 × 49 = 2058/1960
4. Add the two like fractions:
   360/1960 + 2058/1960 = 360 + 2058/1960 = 2418/1960
5. 2418/1960 simplified gives 1209/980
6. So, 18/98 + 42/40 = 1209/980
   In mixed form: 1229/980

MathStep (Works offline)

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

Related: ³⁶/₉₈+⁴²/₄₀ ¹⁸/₉₈+⁸⁴/₄₀ ¹⁸/₉₈+⁴²/₈₀ ⁵⁴/₉₈+⁴²/₄₀ ⁹⁰/₉₈+⁴²/₄₀

Add Fractions Calculator