Answers

Add 15/80 and 63/40

1^st number: 15/80, 2^nd number: 1 23/40

15/80 + 63/40 is 141/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 40 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   15/80 = 15 × 1/80 × 1 = 15/80
3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
   63/40 = 63 × 2/40 × 2 = 126/80
4. Add the two like fractions:
   15/80 + 126/80 = 15 + 126/80 = 141/80
5. So, 15/80 + 63/40 = 141/80
   In mixed form: 161/80

MathStep (Works offline)

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

Related: ³⁰/₈₀+⁶³/₄₀ ¹⁵/₈₀+⁶³/₈₀ ⁴⁵/₈₀+⁶³/₄₀ ⁷⁵/₈₀+⁶³/₄₀

Add Fractions Calculator