Solve Complex Fraction: 10÷(7÷(9/2)) Step-by-Step Solution

Complex Fractions with Division Operations

10/(7/(9/2))=? 10/(7/(9/2))=\text{?}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:06 Let's solve this problem step by step.
00:10 First, we write the division as a fraction. This helps us see the relationship clearly.
00:18 Remember, division is the same as multiplying by the reciprocal. That's the flipped version of a fraction.
00:29 Now, move the multiplication to the numerator. Keep it clear and organized.
00:38 Again, division is like multiplying by the reciprocal. This is an important concept.
00:50 Next, let's factor 10. It can be broken down into 2 and 5.
00:59 Reduce or simplify what you can. This makes the numbers easier to work with.
01:07 Break down 45. Think of it as 42 plus 3.
01:12 Now, separate the fraction into a whole number and the remainder. This simplifies understanding.
01:19 And there you have it. That's the solution to our problem!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

10/(7/(9/2))=? 10/(7/(9/2))=\text{?}

2

Step-by-step solution

We rewrite the innermost parentheses in fraction form:

10/(7:92)= 10/(7:\frac{9}{2})=

We convert the parentheses into a multiplication exercise through inverting the fraction:

10/(7×29)= 10/(7\times\frac{2}{9})=

We add the 7 to the numerator for the multiplication exercise:

10/(7×29)=10:7×29 10/(\frac{7\times2}{9})=10:\frac{7\times2}{9}

We convert the exercise into a multiplication by inverting the fraction:

10×97×2= 10\times\frac{9}{7\times2}=

We add the 10 to the numerator for the multiplication exercise:

10×97×2= \frac{10\times9}{7\times2}=

We break down the 10 into a simpler multiplication exercise:

5×2×97×2= \frac{5\times2\times9}{7\times2}=

We simplify the 2 in the numerator and denominator:

5×97=457 \frac{5\times9}{7}=\frac{45}{7}

We convert the fraction's numerator into a sum exercise:

42+37=427+37=6+37=637 \frac{42+3}{7}=\frac{42}{7}+\frac{3}{7}=6+\frac{3}{7}=6\frac{3}{7}

3

Final Answer

637 6\frac{3}{7}

Key Points to Remember

Essential concepts to master this topic
  • Rule: Work from innermost parentheses outward using order of operations
  • Technique: Convert division by fraction to multiplication: 10÷149=10×914 10 \div \frac{14}{9} = 10 \times \frac{9}{14}
  • Check: Substitute back into original expression to verify 637 6\frac{3}{7} is correct ✓

Common Mistakes

Avoid these frequent errors
  • Solving left to right without following order of operations
    Don't solve 10÷7 first = 10/7÷(9/2) leads to wrong answer! This ignores parentheses which must be solved first. Always work from innermost parentheses outward following proper order of 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 solve the innermost fraction first?

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Order of operations requires you to work from inside out! The expression 7÷92 7 \div \frac{9}{2} in the denominator must be solved before dividing 10 by the result.

How do I divide by a fraction like 9/2?

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Remember: dividing by a fraction is the same as multiplying by its reciprocal. So 7÷92=7×29=149 7 \div \frac{9}{2} = 7 \times \frac{2}{9} = \frac{14}{9}

What's the easiest way to convert an improper fraction to a mixed number?

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Divide the numerator by the denominator! For 457 \frac{45}{7} : 45 ÷ 7 = 6 remainder 3, so the answer is 637 6\frac{3}{7}

Can I simplify fractions during the problem or wait until the end?

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You can simplify anytime during the problem! In this case, we simplified 5×2×97×2 \frac{5 \times 2 \times 9}{7 \times 2} by canceling the 2s, making the calculation easier.

How do I know if my final answer should be a mixed number or improper fraction?

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For most problems, mixed numbers are preferred when the answer is greater than 1. Mixed numbers like 637 6\frac{3}{7} are easier to understand than 457 \frac{45}{7}

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