Answers

Add 3/40 and 25/42

3/40 + 25/42 is 563/840.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 42 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   3/40 = 3 × 21/40 × 21 = 63/840
3. Likewise, for the 2nd fraction, since 42 × 20 = 840,
   25/42 = 25 × 20/42 × 20 = 500/840
4. Add the two like fractions:
   63/840 + 500/840 = 63 + 500/840 = 563/840
5. So, 3/40 + 25/42 = 563/840

MathStep (Works offline)

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

Related: ⁶/₄₀+²⁵/₄₂ ³/₄₀+⁵⁰/₄₂ ³/₈₀+²⁵/₄₂ ³/₄₀+²⁵/₈₄ ⁹/₄₀+²⁵/₄₂ ³/₄₀+⁷⁵/₄₂ ¹⁵/₄₀+²⁵/₄₂ ²¹/₄₀+²⁵/₄₂

Add Fractions Calculator