Answers

Add 18/75 and 90/40

1^st number: 18/75, 2^nd number: 2 10/40

18/75 + 90/40 is 249/100.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 40 is 600
   
   Next, find the equivalent fraction of both fractional numbers with denominator 600
2. For the 1st fraction, since 75 × 8 = 600,
   18/75 = 18 × 8/75 × 8 = 144/600
3. Likewise, for the 2nd fraction, since 40 × 15 = 600,
   90/40 = 90 × 15/40 × 15 = 1350/600
4. Add the two like fractions:
   144/600 + 1350/600 = 144 + 1350/600 = 1494/600
5. 1494/600 simplified gives 249/100
6. So, 18/75 + 90/40 = 249/100
   In mixed form: 249/100

MathStep (Works offline)

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

Related: ³⁶/₇₅+⁹⁰/₄₀ ¹⁸/₇₅+⁹⁰/₈₀ ⁵⁴/₇₅+⁹⁰/₄₀ ⁹⁰/₇₅+⁹⁰/₄₀

Add Fractions Calculator