Answers

Subtract 35/72 from 21/60

21/60 - 35/72 is -49/360.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 60 × 6 = 360,
   21/60 = 21 × 6/60 × 6 = 126/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   35/72 = 35 × 5/72 × 5 = 175/360
4. Subtract the two like fractions:
   126/360 - 175/360 = 126 - 175/360 = -49/360

MathStep (Works offline)

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

Related: ⁴²/₆₀-³⁵/₇₂ ²¹/₆₀-⁷⁰/₇₂ ⁶³/₆₀-³⁵/₇₂

Subtract Fractions Calculator