Answers

Subtract 45/18 from 40/75

1^st number: 40/75, 2^nd number: 2 9/18

40/75 - 45/18 is -59/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 18 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 75 × 6 = 450,
   40/75 = 40 × 6/75 × 6 = 240/450
3. Likewise, for the 2nd fraction, since 18 × 25 = 450,
   45/18 = 45 × 25/18 × 25 = 1125/450
4. Subtract the two like fractions:
   240/450 - 1125/450 = 240 - 1125/450 = -885/450
5. After reducing the fraction, the answer is -59/30

MathStep (Works offline)

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

Related: ⁸⁰/₇₅-⁴⁵/₁₈ ⁴⁰/₇₅-⁹⁰/₁₈ ⁴⁰/₇₅-⁴⁵/₃₆ ⁴⁰/₇₅-⁴⁵/₅₄ ⁴⁰/₇₅-⁴⁵/₉₀

Subtract Fractions Calculator