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Rational-number operations
Rational-number operations
Example 1
41−52
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Answer: 20−3
- Use common denominator 20:41=205 and 52=208.
- Subtract the numerators: 205−8=20−3.
- The fraction is already in simplest form: 20−3.
Example 2
61×61
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Answer: 361
- Multiply the numerators and denominators: 361.
- The fraction is already in simplest form: 361.
Example 3
4243
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Answer: 23
- Dividing by a fraction means multiplying by its reciprocal: 43×24.
- Multiply the numerators and denominators: 812.
- Divide numerator and denominator by 4:23.
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