Answers

Add 90/42 and 10/90

1^st number: 2 6/42, 2^nd number: 10/90

90/42 + 10/90 is 142/63.

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,
   90/42 = 90 × 15/42 × 15 = 1350/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   10/90 = 10 × 7/90 × 7 = 70/630
4. Add the two like fractions:
   1350/630 + 70/630 = 1350 + 70/630 = 1420/630
5. 1420/630 simplified gives 142/63
6. So, 90/42 + 10/90 = 142/63
   In mixed form: 216/63

MathStep (Works offline)

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

Related: ⁹⁰/₄₂+²⁰/₉₀ ⁹⁰/₈₄+¹⁰/₉₀ ⁹⁰/₄₂+³⁰/₉₀ ⁹⁰/₄₂+⁵⁰/₉₀ ⁹⁰/₄₂+⁷⁰/₉₀

Add Fractions Calculator