Answers

Add 15/60 and 75/40

1^st number: 15/60, 2^nd number: 1 35/40

15/60 + 75/40 is 17/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 40 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 60 × 2 = 120,
   15/60 = 15 × 2/60 × 2 = 30/120
3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
   75/40 = 75 × 3/40 × 3 = 225/120
4. Add the two like fractions:
   30/120 + 225/120 = 30 + 225/120 = 255/120
5. 255/120 simplified gives 17/8
6. So, 15/60 + 75/40 = 17/8
   In mixed form: 21/8

MathStep (Works offline)

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

Related: ³⁰/₆₀+⁷⁵/₄₀ ¹⁵/₆₀+⁷⁵/₈₀ ⁴⁵/₆₀+⁷⁵/₄₀ ⁷⁵/₆₀+⁷⁵/₄₀

Add Fractions Calculator