Solve 3/7 + 2/7: Adding Fractions with Like Denominators

Fraction Addition with Same Denominators

37+27= \frac{3}{7}+\frac{2}{7}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Let's color the appropriate number of squares, according to the given data
00:16 Now let's count and add to the numerator in the new fraction
00:21 The denominator equals the number of cells we divided
00:25 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

37+27= \frac{3}{7}+\frac{2}{7}=

2

Step-by-step solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the fractions and check the denominators.
  • Step 2: Add the numerators since the denominators are the same.
  • Step 3: Reduce the fraction to its simplest form if possible.

Now, let's work through each step:
Step 1: We observe that the fractions are 37\frac{3}{7} and 27\frac{2}{7}, both having the same denominator, 7.
Step 2: Since the denominators are the same, we can directly add the numerators: 3+2=53 + 2 = 5.
Step 3: This results in the fraction 57\frac{5}{7}. As the fraction is already in its simplest form, no further simplification is needed.

Therefore, the solution to the problem is 57 \frac{5}{7} .

3

Final Answer

57 \frac{5}{7}

Key Points to Remember

Essential concepts to master this topic
  • Same Denominators: Keep denominator unchanged, add only the numerators
  • Technique: Add numerators: 3+2=5 3 + 2 = 5 , keep denominator 7
  • Check: Verify 57 \frac{5}{7} cannot be simplified further ✓

Common Mistakes

Avoid these frequent errors
  • Adding both numerators and denominators
    Don't add denominators: 37+27514 \frac{3}{7} + \frac{2}{7} ≠ \frac{5}{14} ! This creates a completely different fraction that's much smaller than the correct answer. Always keep the same denominator and add only the numerators.

Practice Quiz

Test your knowledge with interactive questions

\( \)\( \frac{4}{5}+\frac{1}{5}= \)

FAQ

Everything you need to know about this question

Why don't we add the denominators too?

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The denominator tells us what size pieces we're working with. Since both fractions have sevenths, we're adding pieces of the same size, so the denominator stays 7.

What if I got 5/14 as my answer?

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That means you accidentally added the denominators! 514 \frac{5}{14} is much smaller than 57 \frac{5}{7} . Remember: same denominators = add only numerators.

Do I need to simplify 5/7?

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No! 57 \frac{5}{7} is already in simplest form because 5 and 7 share no common factors other than 1.

How can I visualize this problem?

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Think of a pizza cut into 7 equal slices. You eat 3 slices, then 2 more slices. Total: 5 slices out of 7, which is 57 \frac{5}{7} !

What if the denominators were different?

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If denominators are different, you'd need to find a common denominator first. But here, both fractions already have the same denominator (7), making this much easier!

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