Answers

Subtract 84/7 from 15/9

1^st number: 1 6/9, 2^nd number: 12 0/7

15/9 - 84/7 is -31/3.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 7 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 9 × 7 = 63,
   15/9 = 15 × 7/9 × 7 = 105/63
3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
   84/7 = 84 × 9/7 × 9 = 756/63
4. Subtract the two like fractions:
   105/63 - 756/63 = 105 - 756/63 = -651/63
5. After reducing the fraction, the answer is -31/3

MathStep (Works offline)

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

Related: ³⁰/₉-⁸⁴/₇ ¹⁵/₁₈-⁸⁴/₇ ¹⁵/₉-⁸⁴/₁₄ ⁴⁵/₉-⁸⁴/₇ ¹⁵/₂₇-⁸⁴/₇ ¹⁵/₉-⁸⁴/₂₁ ⁷⁵/₉-⁸⁴/₇ ¹⁵/₄₅-⁸⁴/₇ ¹⁵/₉-⁸⁴/₃₅ ¹⁵/₆₃-⁸⁴/₇ ¹⁵/₉-⁸⁴/₄₉

Subtract Fractions Calculator