Answers

Add 90/15 and 98/80

1^st number: 6 0/15, 2^nd number: 1 18/80

90/15 + 98/80 is 289/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 80 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 15 × 16 = 240,
   90/15 = 90 × 16/15 × 16 = 1440/240
3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
   98/80 = 98 × 3/80 × 3 = 294/240
4. Add the two like fractions:
   1440/240 + 294/240 = 1440 + 294/240 = 1734/240
5. 1734/240 simplified gives 289/40
6. So, 90/15 + 98/80 = 289/40
   In mixed form: 79/40

MathStep (Works offline)

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

Related: ⁹⁰/₃₀+⁹⁸/₈₀ ⁹⁰/₄₅+⁹⁸/₈₀ ⁹⁰/₇₅+⁹⁸/₈₀

Add Fractions Calculator