Answers

Subtract 80/18 from 7/72

1^st number: 7/72, 2^nd number: 4 8/18

7/72 - 80/18 is -313/72.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 18 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 72 × 1 = 72,
   7/72 = 7 × 1/72 × 1 = 7/72
3. Likewise, for the 2nd fraction, since 18 × 4 = 72,
   80/18 = 80 × 4/18 × 4 = 320/72
4. Subtract the two like fractions:
   7/72 - 320/72 = 7 - 320/72 = -313/72

MathStep (Works offline)

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

Related: ¹⁴/₇₂-⁸⁰/₁₈ ⁷/₇₂-⁸⁰/₃₆ ²¹/₇₂-⁸⁰/₁₈ ⁷/₇₂-⁸⁰/₅₄ ³⁵/₇₂-⁸⁰/₁₈ ⁷/₇₂-⁸⁰/₉₀ ⁴⁹/₇₂-⁸⁰/₁₈

Subtract Fractions Calculator