Answers

Subtract 21/90 from 48/27

1^st number: 1 21/27, 2^nd number: 21/90

48/27 - 21/90 is 139/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 90 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 27 × 10 = 270,
   48/27 = 48 × 10/27 × 10 = 480/270
3. Likewise, for the 2nd fraction, since 90 × 3 = 270,
   21/90 = 21 × 3/90 × 3 = 63/270
4. Subtract the two like fractions:
   480/270 - 63/270 = 480 - 63/270 = 417/270
5. After reducing the fraction, the answer is 139/90
6. In mixed form: 149/90

MathStep (Works offline)

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

Related: ⁹⁶/₂₇-²¹/₉₀ ⁴⁸/₂₇-⁴²/₉₀ ⁴⁸/₅₄-²¹/₉₀ ⁴⁸/₂₇-⁶³/₉₀ ⁴⁸/₈₁-²¹/₉₀

Subtract Fractions Calculator