Answers

Subtract 63/7 from 45/8

1^st number: 5 5/8, 2^nd number: 9 0/7

45/8 - 63/7 is -27/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 7 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 8 × 7 = 56,
   45/8 = 45 × 7/8 × 7 = 315/56
3. Likewise, for the 2nd fraction, since 7 × 8 = 56,
   63/7 = 63 × 8/7 × 8 = 504/56
4. Subtract the two like fractions:
   315/56 - 504/56 = 315 - 504/56 = -189/56
5. After reducing the fraction, the answer is -27/8

MathStep (Works offline)

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

Related: ⁹⁰/₈-⁶³/₇ ⁴⁵/₁₆-⁶³/₇ ⁴⁵/₈-⁶³/₁₄ ⁴⁵/₂₄-⁶³/₇ ⁴⁵/₈-⁶³/₂₁ ⁴⁵/₄₀-⁶³/₇ ⁴⁵/₈-⁶³/₃₅ ⁴⁵/₅₆-⁶³/₇ ⁴⁵/₈-⁶³/₄₉

Subtract Fractions Calculator