Answers

Subtract 70/18 from 84/75

1^st number: 1 9/75, 2^nd number: 3 16/18

84/75 - 70/18 is -623/225.

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,
   84/75 = 84 × 6/75 × 6 = 504/450
3. Likewise, for the 2nd fraction, since 18 × 25 = 450,
   70/18 = 70 × 25/18 × 25 = 1750/450
4. Subtract the two like fractions:
   504/450 - 1750/450 = 504 - 1750/450 = -1246/450
5. After reducing the fraction, the answer is -623/225

MathStep (Works offline)

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

Related: ⁸⁴/₇₅-⁷⁰/₃₆ ⁸⁴/₇₅-⁷⁰/₅₄ ⁸⁴/₇₅-⁷⁰/₉₀

Subtract Fractions Calculator