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FractionsArithmeticElementary schoolabout 0:45

Calculate 5/3 - 9/9: animated lesson

A narrated, step-by-step fractions video lesson with captions. Final answer: 2/3.

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Video with a synthetic English voice and captions. Pick another language for subtitles in that language, or open the interactive version.

Video narrated by a synthetic voice (Piper TTS, en_US-ljspeech-high voice (LJ Speech dataset, public domain)); the steps come from our maths engine and the answer was checked independently. Download MP4 (0.3 MB) · Captions (WebVTT)

Steps on screen

1. The problem
Worked example
5/3 - 9/9
2. Step by step
1. $\frac{5}{3} - 1 = \frac{5}{3} - \frac{3}{3}$
  Rewrite both fractions with the least common denominator
2. $\frac{5 - 3}{3} = \frac{2}{3}$
  Subtract the numerators and keep the denominator
3. $\frac{2}{3}$
  Final answer in lowest terms
3. The answer
$\frac{2}{3}$
5/3 - 9/9 = 2/3
4. Check
- Decimal check: 2/3 ≈ 0.6666666667

Transcript

The problem. Here is the problem: 5 over 3 minus 9 over 9. Exact arithmetic with fractions (results kept in lowest terms).

Step by step. Rewrite both fractions with the least common denominator. The LCD of 3 and 1 is 3. Subtract the numerators and keep the denominator. Final answer in lowest terms.

The answer. So the answer is 2 over 3. Fractions are combined over a common denominator for addition and subtraction, multiplied straight across, and divided by multiplying by the reciprocal. The result is reduced by the greatest common factor.

Check. Decimal check: 2 over 3 approximately 0.6666666667.

About fractions

Add, subtract, multiply and divide fractions, finding common denominators and simplifying the result.

Calculate 5/3 - 9/9: Fractions Step-by-Step Lesson