Answers

Subtract 32/45 from 21/16

1^st number: 1 5/16, 2^nd number: 32/45

21/16 - 32/45 is 433/720.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 45 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 16 × 45 = 720,
   21/16 = 21 × 45/16 × 45 = 945/720
3. Likewise, for the 2nd fraction, since 45 × 16 = 720,
   32/45 = 32 × 16/45 × 16 = 512/720
4. Subtract the two like fractions:
   945/720 - 512/720 = 945 - 512/720 = 433/720

MathStep (Works offline)

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

Related: ⁴²/₁₆-³²/₄₅ ²¹/₁₆-⁶⁴/₄₅ ²¹/₃₂-³²/₄₅ ²¹/₁₆-³²/₉₀ ⁶³/₁₆-³²/₄₅ ²¹/₁₆-⁹⁶/₄₅ ²¹/₄₈-³²/₄₅ ²¹/₈₀-³²/₄₅

Subtract Fractions Calculator