Answers

Subtract 63/40 from 4/30

1^st number: 4/30, 2^nd number: 1 23/40

4/30 - 63/40 is -173/120.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 40 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 30 × 4 = 120,
   4/30 = 4 × 4/30 × 4 = 16/120
3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
   63/40 = 63 × 3/40 × 3 = 189/120
4. Subtract the two like fractions:
   16/120 - 189/120 = 16 - 189/120 = -173/120

MathStep (Works offline)

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

Related: ⁸/₃₀-⁶³/₄₀ ⁴/₆₀-⁶³/₄₀ ⁴/₃₀-⁶³/₈₀ ¹²/₃₀-⁶³/₄₀ ⁴/₉₀-⁶³/₄₀ ²⁰/₃₀-⁶³/₄₀ ²⁸/₃₀-⁶³/₄₀

Subtract Fractions Calculator