Answers

Subtract 21/7 from 1/56

1^st number: 1/56, 2^nd number: 3 0/7

1/56 - 21/7 is -167/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 7 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 56 × 1 = 56,
   1/56 = 1 × 1/56 × 1 = 1/56
3. Likewise, for the 2nd fraction, since 7 × 8 = 56,
   21/7 = 21 × 8/7 × 8 = 168/56
4. Subtract the two like fractions:
   1/56 - 168/56 = 1 - 168/56 = -167/56

MathStep (Works offline)

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

Related: ²/₅₆-²¹/₇ ¹/₅₆-⁴²/₇ ¹/₅₆-²¹/₁₄ ³/₅₆-²¹/₇ ¹/₅₆-⁶³/₇ ⁵/₅₆-²¹/₇ ¹/₅₆-²¹/₃₅ ⁷/₅₆-²¹/₇ ¹/₅₆-²¹/₄₉

Subtract Fractions Calculator