Answers

Subtract 45/10 from 30/7

1^st number: 4 2/7, 2^nd number: 4 5/10

30/7 - 45/10 is -3/14.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 10 is 70
   
   Next, find the equivalent fraction of both fractional numbers with denominator 70
2. For the 1st fraction, since 7 × 10 = 70,
   30/7 = 30 × 10/7 × 10 = 300/70
3. Likewise, for the 2nd fraction, since 10 × 7 = 70,
   45/10 = 45 × 7/10 × 7 = 315/70
4. Subtract the two like fractions:
   300/70 - 315/70 = 300 - 315/70 = -15/70
5. After reducing the fraction, the answer is -3/14

MathStep (Works offline)

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

Related: ⁶⁰/₇-⁴⁵/₁₀ ³⁰/₇-⁹⁰/₁₀ ³⁰/₁₄-⁴⁵/₁₀ ³⁰/₇-⁴⁵/₂₀ ⁹⁰/₇-⁴⁵/₁₀ ³⁰/₂₁-⁴⁵/₁₀ ³⁰/₇-⁴⁵/₃₀ ³⁰/₃₅-⁴⁵/₁₀ ³⁰/₇-⁴⁵/₅₀ ³⁰/₄₉-⁴⁵/₁₀ ³⁰/₇-⁴⁵/₇₀

Subtract Fractions Calculator