Answers

Subtract 56/63 from 42/15

1^st number: 2 12/15, 2^nd number: 56/63

42/15 - 56/63 is 86/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 63 is 315
   
   Next, find the equivalent fraction of both fractional numbers with denominator 315
2. For the 1st fraction, since 15 × 21 = 315,
   42/15 = 42 × 21/15 × 21 = 882/315
3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
   56/63 = 56 × 5/63 × 5 = 280/315
4. Subtract the two like fractions:
   882/315 - 280/315 = 882 - 280/315 = 602/315
5. After reducing the fraction, the answer is 86/45
6. In mixed form: 141/45

MathStep (Works offline)

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

Related: ⁸⁴/₁₅-⁵⁶/₆₃ ⁴²/₃₀-⁵⁶/₆₃ ⁴²/₄₅-⁵⁶/₆₃ ⁴²/₇₅-⁵⁶/₆₃

Subtract Fractions Calculator