Answers

Add 42/49 and 45/40

1^st number: 42/49, 2^nd number: 1 5/40

42/49 + 45/40 is 111/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 40 is 1960
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1960
2. For the 1st fraction, since 49 × 40 = 1960,
   42/49 = 42 × 40/49 × 40 = 1680/1960
3. Likewise, for the 2nd fraction, since 40 × 49 = 1960,
   45/40 = 45 × 49/40 × 49 = 2205/1960
4. Add the two like fractions:
   1680/1960 + 2205/1960 = 1680 + 2205/1960 = 3885/1960
5. 3885/1960 simplified gives 111/56
6. So, 42/49 + 45/40 = 111/56
   In mixed form: 155/56

MathStep (Works offline)

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

Related: ⁸⁴/₄₉+⁴⁵/₄₀ ⁴²/₄₉+⁹⁰/₄₀ ⁴²/₉₈+⁴⁵/₄₀ ⁴²/₄₉+⁴⁵/₈₀

Add Fractions Calculator