Answers

Subtract 5/45 from 42/15

1^st number: 2 12/15, 2^nd number: 5/45

42/15 - 5/45 is 121/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 45 is 45
   
   Next, find the equivalent fraction of both fractional numbers with denominator 45
2. For the 1st fraction, since 15 × 3 = 45,
   42/15 = 42 × 3/15 × 3 = 126/45
3. Likewise, for the 2nd fraction, since 45 × 1 = 45,
   5/45 = 5 × 1/45 × 1 = 5/45
4. Subtract the two like fractions:
   126/45 - 5/45 = 126 - 5/45 = 121/45
5. In mixed form: 231/45

MathStep (Works offline)

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

Related: ⁸⁴/₁₅-⁵/₄₅ ⁴²/₁₅-¹⁰/₄₅ ⁴²/₃₀-⁵/₄₅ ⁴²/₁₅-⁵/₉₀ ⁴²/₁₅-¹⁵/₄₅ ⁴²/₄₅-⁵/₄₅ ⁴²/₁₅-²⁵/₄₅ ⁴²/₇₅-⁵/₄₅ ⁴²/₁₅-³⁵/₄₅

Subtract Fractions Calculator