Answers

Subtract 42/7 from 15/5

1^st number: 3 0/5, 2^nd number: 6 0/7

15/5 - 42/7 is -3/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 5 and 7 is 35
   
   Next, find the equivalent fraction of both fractional numbers with denominator 35
2. For the 1st fraction, since 5 × 7 = 35,
   15/5 = 15 × 7/5 × 7 = 105/35
3. Likewise, for the 2nd fraction, since 7 × 5 = 35,
   42/7 = 42 × 5/7 × 5 = 210/35
4. Subtract the two like fractions:
   105/35 - 210/35 = 105 - 210/35 = -105/35
5. After reducing the fraction, the answer is -3/1

MathStep (Works offline)

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

Related: ³⁰/₅-⁴²/₇ ¹⁵/₅-⁸⁴/₇ ¹⁵/₁₀-⁴²/₇ ¹⁵/₅-⁴²/₁₄ ⁴⁵/₅-⁴²/₇ ¹⁵/₅-⁴²/₂₁ ⁷⁵/₅-⁴²/₇ ¹⁵/₂₅-⁴²/₇ ¹⁵/₅-⁴²/₃₅ ¹⁵/₃₅-⁴²/₇ ¹⁵/₅-⁴²/₄₉

Subtract Fractions Calculator