Answers

Subtract 81/8 from 56/30

1^st number: 1 26/30, 2^nd number: 10 1/8

56/30 - 81/8 is -991/120.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 8 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 30 × 4 = 120,
   56/30 = 56 × 4/30 × 4 = 224/120
3. Likewise, for the 2nd fraction, since 8 × 15 = 120,
   81/8 = 81 × 15/8 × 15 = 1215/120
4. Subtract the two like fractions:
   224/120 - 1215/120 = 224 - 1215/120 = -991/120

MathStep (Works offline)

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

Related: ⁵⁶/₆₀-⁸¹/₈ ⁵⁶/₃₀-⁸¹/₁₆ ⁵⁶/₉₀-⁸¹/₈ ⁵⁶/₃₀-⁸¹/₂₄ ⁵⁶/₃₀-⁸¹/₄₀ ⁵⁶/₃₀-⁸¹/₅₆

Subtract Fractions Calculator