Answers

Subtract 25/70 from 7/28

7/28 - 25/70 is -3/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 70 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 28 × 5 = 140,
   7/28 = 7 × 5/28 × 5 = 35/140
3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
   25/70 = 25 × 2/70 × 2 = 50/140
4. Subtract the two like fractions:
   35/140 - 50/140 = 35 - 50/140 = -15/140
5. After reducing the fraction, the answer is -3/28

MathStep (Works offline)

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

Related: ¹⁴/₂₈-²⁵/₇₀ ⁷/₂₈-⁵⁰/₇₀ ⁷/₅₆-²⁵/₇₀ ²¹/₂₈-²⁵/₇₀ ⁷/₂₈-⁷⁵/₇₀ ⁷/₈₄-²⁵/₇₀ ³⁵/₂₈-²⁵/₇₀ ⁴⁹/₂₈-²⁵/₇₀

Subtract Fractions Calculator