Answers

Subtract 40/7 from 45/4

1^st number: 11 1/4, 2^nd number: 5 5/7

45/4 - 40/7 is 155/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 7 is 28
   
   Next, find the equivalent fraction of both fractional numbers with denominator 28
2. For the 1st fraction, since 4 × 7 = 28,
   45/4 = 45 × 7/4 × 7 = 315/28
3. Likewise, for the 2nd fraction, since 7 × 4 = 28,
   40/7 = 40 × 4/7 × 4 = 160/28
4. Subtract the two like fractions:
   315/28 - 160/28 = 315 - 160/28 = 155/28
5. In mixed form: 515/28

MathStep (Works offline)

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

Related: ⁹⁰/₄-⁴⁰/₇ ⁴⁵/₄-⁸⁰/₇ ⁴⁵/₈-⁴⁰/₇ ⁴⁵/₄-⁴⁰/₁₄ ⁴⁵/₁₂-⁴⁰/₇ ⁴⁵/₄-⁴⁰/₂₁ ⁴⁵/₂₀-⁴⁰/₇ ⁴⁵/₄-⁴⁰/₃₅ ⁴⁵/₂₈-⁴⁰/₇ ⁴⁵/₄-⁴⁰/₄₉

Subtract Fractions Calculator