Answers

Subtract 18/56 from 70/80

70/80 - 18/56 is 31/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 56 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   70/80 = 70 × 7/80 × 7 = 490/560
3. Likewise, for the 2nd fraction, since 56 × 10 = 560,
   18/56 = 18 × 10/56 × 10 = 180/560
4. Subtract the two like fractions:
   490/560 - 180/560 = 490 - 180/560 = 310/560
5. After reducing the fraction, the answer is 31/56

MathStep (Works offline)

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

Related: ⁷⁰/₈₀-³⁶/₅₆ ⁷⁰/₈₀-⁵⁴/₅₆ ⁷⁰/₈₀-⁹⁰/₅₆

Subtract Fractions Calculator