Answers

Subtract 21/70 from 36/27

1^st number: 1 9/27, 2^nd number: 21/70

36/27 - 21/70 is 31/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 70 is 1890
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1890
2. For the 1st fraction, since 27 × 70 = 1890,
   36/27 = 36 × 70/27 × 70 = 2520/1890
3. Likewise, for the 2nd fraction, since 70 × 27 = 1890,
   21/70 = 21 × 27/70 × 27 = 567/1890
4. Subtract the two like fractions:
   2520/1890 - 567/1890 = 2520 - 567/1890 = 1953/1890
5. After reducing the fraction, the answer is 31/30
6. In mixed form: 11/30

MathStep (Works offline)

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

Related: ⁷²/₂₇-²¹/₇₀ ³⁶/₂₇-⁴²/₇₀ ³⁶/₅₄-²¹/₇₀ ³⁶/₂₇-⁶³/₇₀ ³⁶/₈₁-²¹/₇₀

Subtract Fractions Calculator