Answers

Add 90/28 and 75/60

1^st number: 3 6/28, 2^nd number: 1 15/60

90/28 + 75/60 is 125/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 60 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 28 × 15 = 420,
   90/28 = 90 × 15/28 × 15 = 1350/420
3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
   75/60 = 75 × 7/60 × 7 = 525/420
4. Add the two like fractions:
   1350/420 + 525/420 = 1350 + 525/420 = 1875/420
5. 1875/420 simplified gives 125/28
6. So, 90/28 + 75/60 = 125/28
   In mixed form: 413/28

MathStep (Works offline)

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

Related: ⁹⁰/₅₆+⁷⁵/₆₀ ⁹⁰/₈₄+⁷⁵/₆₀

Add Fractions Calculator