Answers

Add 40/42 and 42/18

1^st number: 40/42, 2^nd number: 2 6/18

40/42 + 42/18 is 23/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 42 × 3 = 126,
   40/42 = 40 × 3/42 × 3 = 120/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   42/18 = 42 × 7/18 × 7 = 294/126
4. Add the two like fractions:
   120/126 + 294/126 = 120 + 294/126 = 414/126
5. 414/126 simplified gives 23/7
6. So, 40/42 + 42/18 = 23/7
   In mixed form: 32/7

MathStep (Works offline)

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

Related: ⁸⁰/₄₂+⁴²/₁₈ ⁴⁰/₄₂+⁸⁴/₁₈ ⁴⁰/₈₄+⁴²/₁₈ ⁴⁰/₄₂+⁴²/₃₆ ⁴⁰/₄₂+⁴²/₅₄ ⁴⁰/₄₂+⁴²/₉₀

Add Fractions Calculator