Answers

Subtract 40/5 from 7/80

1^st number: 7/80, 2^nd number: 8 0/5

7/80 - 40/5 is -633/80.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 5 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   7/80 = 7 × 1/80 × 1 = 7/80
3. Likewise, for the 2nd fraction, since 5 × 16 = 80,
   40/5 = 40 × 16/5 × 16 = 640/80
4. Subtract the two like fractions:
   7/80 - 640/80 = 7 - 640/80 = -633/80

MathStep (Works offline)

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

Related: ¹⁴/₈₀-⁴⁰/₅ ⁷/₈₀-⁸⁰/₅ ⁷/₈₀-⁴⁰/₁₀ ²¹/₈₀-⁴⁰/₅ ⁷/₈₀-⁴⁰/₁₅ ³⁵/₈₀-⁴⁰/₅ ⁷/₈₀-⁴⁰/₂₅ ⁴⁹/₈₀-⁴⁰/₅ ⁷/₈₀-⁴⁰/₃₅

Subtract Fractions Calculator