Answers

Add 75/42 and 28/90

1^st number: 1 33/42, 2^nd number: 28/90

75/42 + 28/90 is 1321/630.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 42 × 15 = 630,
   75/42 = 75 × 15/42 × 15 = 1125/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   28/90 = 28 × 7/90 × 7 = 196/630
4. Add the two like fractions:
   1125/630 + 196/630 = 1125 + 196/630 = 1321/630
5. So, 75/42 + 28/90 = 1321/630
   In mixed form: 261/630

MathStep (Works offline)

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

Related: ⁷⁵/₄₂+⁵⁶/₉₀ ⁷⁵/₈₄+²⁸/₉₀ ⁷⁵/₄₂+⁸⁴/₉₀

Add Fractions Calculator