Answers

Subtract 84/15 from 75/90

1^st number: 75/90, 2^nd number: 5 9/15

75/90 - 84/15 is -143/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 15 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   75/90 = 75 × 1/90 × 1 = 75/90
3. Likewise, for the 2nd fraction, since 15 × 6 = 90,
   84/15 = 84 × 6/15 × 6 = 504/90
4. Subtract the two like fractions:
   75/90 - 504/90 = 75 - 504/90 = -429/90
5. After reducing the fraction, the answer is -143/30

MathStep (Works offline)

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

Related: ⁷⁵/₉₀-⁸⁴/₃₀ ⁷⁵/₉₀-⁸⁴/₄₅ ⁷⁵/₉₀-⁸⁴/₇₅

Subtract Fractions Calculator