Answers

Subtract 12/5 from 15/80

1^st number: 15/80, 2^nd number: 2 2/5

15/80 - 12/5 is -177/80.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 5 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   15/80 = 15 × 1/80 × 1 = 15/80
3. Likewise, for the 2nd fraction, since 5 × 16 = 80,
   12/5 = 12 × 16/5 × 16 = 192/80
4. Subtract the two like fractions:
   15/80 - 192/80 = 15 - 192/80 = -177/80

MathStep (Works offline)

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

Related: ³⁰/₈₀-¹²/₅ ¹⁵/₈₀-²⁴/₅ ¹⁵/₈₀-¹²/₁₀ ⁴⁵/₈₀-¹²/₅ ¹⁵/₈₀-³⁶/₅ ¹⁵/₈₀-¹²/₁₅ ⁷⁵/₈₀-¹²/₅ ¹⁵/₈₀-⁶⁰/₅ ¹⁵/₈₀-¹²/₂₅ ¹⁵/₈₀-⁸⁴/₅ ¹⁵/₈₀-¹²/₃₅

Subtract Fractions Calculator