Answers

Subtract 18/90 from 45/35

1^st number: 1 10/35, 2^nd number: 18/90

45/35 - 18/90 is 38/35.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 35 × 18 = 630,
   45/35 = 45 × 18/35 × 18 = 810/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   18/90 = 18 × 7/90 × 7 = 126/630
4. Subtract the two like fractions:
   810/630 - 126/630 = 810 - 126/630 = 684/630
5. After reducing the fraction, the answer is 38/35
6. In mixed form: 13/35

MathStep (Works offline)

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

Related: ⁹⁰/₃₅-¹⁸/₉₀ ⁴⁵/₃₅-³⁶/₉₀ ⁴⁵/₇₀-¹⁸/₉₀ ⁴⁵/₃₅-⁵⁴/₉₀

Subtract Fractions Calculator