Answers

Subtract 80/60 from 45/30

1^st number: 1 15/30, 2^nd number: 1 20/60

45/30 - 80/60 is 1/6.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 60 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 30 × 2 = 60,
   45/30 = 45 × 2/30 × 2 = 90/60
3. Likewise, for the 2nd fraction, since 60 × 1 = 60,
   80/60 = 80 × 1/60 × 1 = 80/60
4. Subtract the two like fractions:
   90/60 - 80/60 = 90 - 80/60 = 10/60
5. After reducing the fraction, the answer is 1/6

MathStep (Works offline)

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

Related: ⁹⁰/₃₀-⁸⁰/₆₀ ⁴⁵/₆₀-⁸⁰/₆₀ ⁴⁵/₉₀-⁸⁰/₆₀

Subtract Fractions Calculator