Answers

Subtract 6/72 from 7/20

7/20 - 6/72 is 4/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 20 × 18 = 360,
   7/20 = 7 × 18/20 × 18 = 126/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   6/72 = 6 × 5/72 × 5 = 30/360
4. Subtract the two like fractions:
   126/360 - 30/360 = 126 - 30/360 = 96/360
5. After reducing the fraction, the answer is 4/15

MathStep (Works offline)

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

Related: ¹⁴/₂₀-⁶/₇₂ ⁷/₂₀-¹²/₇₂ ⁷/₄₀-⁶/₇₂ ²¹/₂₀-⁶/₇₂ ⁷/₂₀-¹⁸/₇₂ ⁷/₆₀-⁶/₇₂ ³⁵/₂₀-⁶/₇₂ ⁷/₂₀-³⁰/₇₂ ⁴⁹/₂₀-⁶/₇₂ ⁷/₂₀-⁴²/₇₂

Subtract Fractions Calculator