Answers

Add 80/4 and 15/63

1^st number: 20 0/4, 2^nd number: 15/63

80/4 + 15/63 is 425/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 4 × 63 = 252,
   80/4 = 80 × 63/4 × 63 = 5040/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   15/63 = 15 × 4/63 × 4 = 60/252
4. Add the two like fractions:
   5040/252 + 60/252 = 5040 + 60/252 = 5100/252
5. 5100/252 simplified gives 425/21
6. So, 80/4 + 15/63 = 425/21
   In mixed form: 205/21

MathStep (Works offline)

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

Related: ⁸⁰/₄+³⁰/₆₃ ⁸⁰/₈+¹⁵/₆₃ ⁸⁰/₄+⁴⁵/₆₃ ⁸⁰/₁₂+¹⁵/₆₃ ⁸⁰/₄+⁷⁵/₆₃ ⁸⁰/₂₀+¹⁵/₆₃ ⁸⁰/₂₈+¹⁵/₆₃

Add Fractions Calculator