Solve Mixed Number Equation: 3¼ - (½ - ½) with Order of Operations

Mixed Number Subtraction with Parentheses

324(36510)= 3\frac{2}{4}-(\frac{3}{6}-\frac{5}{10})=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:05 Let's solve a problem together!
00:08 Remember, when you see a minus times a minus, it turns into a plus.
00:15 We'll use this idea in our exercise.
00:24 Now, solve step by step. Follow the order of operations, working left to right.
00:35 Reduce the fractions and solve them carefully.
00:45 Great job! That's the solution to the problem.

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

324(36510)= 3\frac{2}{4}-(\frac{3}{6}-\frac{5}{10})=

2

Step-by-step solution

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

  • Step 1: Simplify the fractions inside the parentheses.
  • Step 2: Perform the arithmetic operation inside the parentheses.
  • Step 3: Subtract this result from the mixed number.

Now, let's work through each step:
Step 1: Simplify the fractions: 36=12\frac{3}{6} = \frac{1}{2} and 510=12\frac{5}{10} = \frac{1}{2}.
Step 2: Perform arithmetic inside the parentheses: 1212=0 \frac{1}{2} - \frac{1}{2} = 0.
Step 3: Subtract 00 from 3243\frac{2}{4}. First, convert 3243\frac{2}{4} to a simpler form: 324=3123\frac{2}{4} = 3\frac{1}{2}. Therefore, 3120=3123\frac{1}{2} - 0 = 3\frac{1}{2} .

Therefore, the solution to the problem is 312 3\frac{1}{2} .

3

Final Answer

312 3\frac{1}{2}

Key Points to Remember

Essential concepts to master this topic
  • Order of Operations: Always solve inside parentheses first before other operations
  • Simplification: Convert 36=12 \frac{3}{6} = \frac{1}{2} and 510=12 \frac{5}{10} = \frac{1}{2} before subtracting
  • Verification: 1212=0 \frac{1}{2} - \frac{1}{2} = 0 , so 3120=312 3\frac{1}{2} - 0 = 3\frac{1}{2}

Common Mistakes

Avoid these frequent errors
  • Ignoring order of operations and working left to right
    Don't subtract 32436 3\frac{2}{4} - \frac{3}{6} first = wrong setup! This skips the parentheses and breaks the order of operations. Always solve what's inside parentheses before doing any other operations.

Practice Quiz

Test your knowledge with interactive questions

\( 100-(5+55)= \)

FAQ

Everything you need to know about this question

Why do I need to simplify the fractions first?

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Simplifying makes the arithmetic easier! When you see 36 \frac{3}{6} and 510 \frac{5}{10} , converting them to 12 \frac{1}{2} shows they're equal, so their difference is 0.

What if the parentheses don't equal zero?

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Then you'd subtract that result from the mixed number! For example, if the parentheses equaled 14 \frac{1}{4} , you'd calculate 31214 3\frac{1}{2} - \frac{1}{4} by finding a common denominator.

Do I always convert mixed numbers to improper fractions?

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Not always! In this problem, since we're subtracting 0, the mixed number stays the same. Only convert when you need to perform actual addition or subtraction with fractions.

How do I know if I followed order of operations correctly?

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Check that you solved parentheses first, then any other operations. Write each step clearly: parentheses → simplify → final calculation.

What's the difference between 3²/₄ and 3½?

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They're the same value! 324=312 3\frac{2}{4} = 3\frac{1}{2} because 24 \frac{2}{4} simplifies to 12 \frac{1}{2} . Always simplify fractions to their lowest terms.

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