Answers

Subtract 40/16 from 84/18

1^st number: 4 12/18, 2^nd number: 2 8/16

84/18 - 40/16 is 13/6.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 16 is 144
   
   Next, find the equivalent fraction of both fractional numbers with denominator 144
2. For the 1st fraction, since 18 × 8 = 144,
   84/18 = 84 × 8/18 × 8 = 672/144
3. Likewise, for the 2nd fraction, since 16 × 9 = 144,
   40/16 = 40 × 9/16 × 9 = 360/144
4. Subtract the two like fractions:
   672/144 - 360/144 = 672 - 360/144 = 312/144
5. After reducing the fraction, the answer is 13/6
6. In mixed form: 21/6

MathStep (Works offline)

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

Related: ⁸⁴/₁₈-⁸⁰/₁₆ ⁸⁴/₃₆-⁴⁰/₁₆ ⁸⁴/₁₈-⁴⁰/₃₂ ⁸⁴/₅₄-⁴⁰/₁₆ ⁸⁴/₁₈-⁴⁰/₄₈ ⁸⁴/₉₀-⁴⁰/₁₆ ⁸⁴/₁₈-⁴⁰/₈₀

Subtract Fractions Calculator