Answers

Add 36/21 and 25/40

1^st number: 1 15/21, 2^nd number: 25/40

36/21 + 25/40 is 131/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 21 × 40 = 840,
   36/21 = 36 × 40/21 × 40 = 1440/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   25/40 = 25 × 21/40 × 21 = 525/840
4. Add the two like fractions:
   1440/840 + 525/840 = 1440 + 525/840 = 1965/840
5. 1965/840 simplified gives 131/56
6. So, 36/21 + 25/40 = 131/56
   In mixed form: 219/56

MathStep (Works offline)

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

Related: ⁷²/₂₁+²⁵/₄₀ ³⁶/₂₁+⁵⁰/₄₀ ³⁶/₄₂+²⁵/₄₀ ³⁶/₂₁+²⁵/₈₀ ³⁶/₂₁+⁷⁵/₄₀ ³⁶/₆₃+²⁵/₄₀

Add Fractions Calculator