Math Problem Statement
adding fructions with different denominator
Solution
To add fractions with different denominators, you'll need to follow a few steps:
Steps to Add Fractions with Different Denominators:
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Find a common denominator: The denominators of the fractions need to be the same to add them. You can find a common denominator by determining the Least Common Denominator (LCD). The LCD is usually the least common multiple (LCM) of the two denominators.
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Adjust the fractions: Once you know the LCD, adjust both fractions so they have this denominator by multiplying both the numerator and denominator of each fraction by the necessary value.
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Add the numerators: After adjusting the fractions, add the numerators together. Keep the common denominator the same.
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Simplify: If needed, simplify the result by reducing the fraction to its lowest terms.
Example:
Let’s say you want to add and .
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Find the common denominator:
- The denominators are 4 and 6.
- The LCM of 4 and 6 is 12.
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Adjust the fractions:
- For , multiply both the numerator and denominator by 3 to get .
- For , multiply both the numerator and denominator by 2 to get .
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Add the numerators:
So, .
Would you like to see more examples or need clarification on any part of this?
Here are 5 follow-up questions:
- How do you find the LCM of two numbers?
- What happens if the fractions already have the same denominator?
- How do you simplify fractions after adding them?
- Can you add mixed numbers with different denominators?
- How do you subtract fractions with different denominators?
Tip: When looking for a common denominator, always aim for the least common denominator (LCD) to keep the numbers smaller and the calculations easier!
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Math Problem Analysis
Mathematical Concepts
Fraction Addition
Least Common Denominator
Simplification of Fractions
Formulas
LCD = Least Common Denominator
a/b + c/d = (a * d + b * c) / (b * d)
Theorems
Least Common Denominator theorem
Suitable Grade Level
Grades 4-6