Answers

Subtract 18/90 from 63/15

1^st number: 4 3/15, 2^nd number: 18/90

63/15 - 18/90 is 4/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 15 × 6 = 90,
   63/15 = 63 × 6/15 × 6 = 378/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   18/90 = 18 × 1/90 × 1 = 18/90
4. Subtract the two like fractions:
   378/90 - 18/90 = 378 - 18/90 = 360/90
5. After reducing the fraction, the answer is 4/1

MathStep (Works offline)

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

Related: ⁶³/₁₅-³⁶/₉₀ ⁶³/₃₀-¹⁸/₉₀ ⁶³/₁₅-⁵⁴/₉₀ ⁶³/₄₅-¹⁸/₉₀ ⁶³/₇₅-¹⁸/₉₀

Subtract Fractions Calculator