Answers

Add 48/21 and 42/20

1^st number: 2 6/21, 2^nd number: 2 2/20

48/21 + 42/20 is 307/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 21 × 20 = 420,
   48/21 = 48 × 20/21 × 20 = 960/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   42/20 = 42 × 21/20 × 21 = 882/420
4. Add the two like fractions:
   960/420 + 882/420 = 960 + 882/420 = 1842/420
5. 1842/420 simplified gives 307/70
6. So, 48/21 + 42/20 = 307/70
   In mixed form: 427/70

MathStep (Works offline)

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

Related: ⁹⁶/₂₁+⁴²/₂₀ ⁴⁸/₂₁+⁸⁴/₂₀ ⁴⁸/₄₂+⁴²/₂₀ ⁴⁸/₂₁+⁴²/₄₀ ⁴⁸/₆₃+⁴²/₂₀ ⁴⁸/₂₁+⁴²/₆₀

Add Fractions Calculator