Answers

Add 75/54 and 42/40

1^st number: 1 21/54, 2^nd number: 1 2/40

75/54 + 42/40 is 439/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 40 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 54 × 20 = 1080,
   75/54 = 75 × 20/54 × 20 = 1500/1080
3. Likewise, for the 2nd fraction, since 40 × 27 = 1080,
   42/40 = 42 × 27/40 × 27 = 1134/1080
4. Add the two like fractions:
   1500/1080 + 1134/1080 = 1500 + 1134/1080 = 2634/1080
5. 2634/1080 simplified gives 439/180
6. So, 75/54 + 42/40 = 439/180
   In mixed form: 279/180

MathStep (Works offline)

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

Related: ⁷⁵/₅₄+⁸⁴/₄₀ ⁷⁵/₅₄+⁴²/₈₀

Add Fractions Calculator