Answers

Subtract 40/35 from 20/18

1^st number: 1 2/18, 2^nd number: 1 5/35

20/18 - 40/35 is -2/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 35 is 630
2. For the 1st fraction, since 18 × 35 = 630,
   20/18 = 20 × 35/18 × 35 = 700/630
3. Likewise, for the 2nd fraction, since 35 × 18 = 630,
   40/35 = 40 × 18/35 × 18 = 720/630
4. Subtract the two fractions:
   700/630 - 720/630 = 700 - 720/630 = -20/630
5. After reducing the fraction, the answer is -2/63

MathStep (Works offline)

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

Related: ⁴⁰/₁₈-⁴⁰/₃₅ ²⁰/₁₈-⁸⁰/₃₅ ²⁰/₃₆-⁴⁰/₃₅ ²⁰/₁₈-⁴⁰/₇₀ ⁶⁰/₁₈-⁴⁰/₃₅ ²⁰/₅₄-⁴⁰/₃₅ ²⁰/₉₀-⁴⁰/₃₅

Subtract Fractions Calculator