Answers

Subtract 60/56 from 18/90

1^st number: 18/90, 2^nd number: 1 4/56

18/90 - 60/56 is -61/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 56 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 90 × 28 = 2520,
   18/90 = 18 × 28/90 × 28 = 504/2520
3. Likewise, for the 2nd fraction, since 56 × 45 = 2520,
   60/56 = 60 × 45/56 × 45 = 2700/2520
4. Subtract the two like fractions:
   504/2520 - 2700/2520 = 504 - 2700/2520 = -2196/2520
5. After reducing the fraction, the answer is -61/70

MathStep (Works offline)

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

Related: ³⁶/₉₀-⁶⁰/₅₆ ⁵⁴/₉₀-⁶⁰/₅₆

Subtract Fractions Calculator