Solve 43-(35-(24-18)): Order of Operations with Nested Parentheses

Order of Operations with Nested Parentheses

43(35(2418))= 43-(35-(24-18))=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solution
00:03 We always solve parentheses first, the rule also applies within parentheses
00:07 We calculate the most "inner" parentheses first
00:13 Now we calculate the outer parentheses
00:22 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

43(35(2418))= 43-(35-(24-18))=

2

Step-by-step solution

Let's recall the order of arithmetic operations: calculate what's in parentheses, multiplication and division (from left to right), addition and subtraction (from left to right)

We emphasize that when there are parentheses within parentheses, we start with the innermost ones first.

43(35(2418))= 43-(35-(24-18))=


In this exercise, there are only subtraction operations and parentheses within parentheses.

Therefore, we will first perform the operation in the inner parentheses, and after calculating we can remove the inner parentheses and be left with only one set of parentheses.

43(35(2418))=43(35(6)) 43-(35-(24-18))= 43-(35-(6))

43(35(6))=43(356) 43-(35-(6))=43-(35-6)
Now we will perform the operation in the remaining parentheses and after calculating we will remove the parentheses

43(356)=43(29) 43-(35-6) = 43-(29)

43(29)=4329=14 43-(29) = 43-29 = 14

Therefore the answer is option a - (14)

3

Final Answer

14 14

Key Points to Remember

Essential concepts to master this topic
  • Rule: Always work from innermost parentheses outward first
  • Technique: Calculate 24-18=6, then 35-6=29, finally 43-29=14
  • Check: Verify each step: inner (6), middle (29), final answer 14 ✓

Common Mistakes

Avoid these frequent errors
  • Working from outside parentheses inward
    Don't calculate 43-35=8 first = wrong path to incorrect answer! This ignores the nested structure and violates order of operations. Always start with the innermost parentheses and work your way out step by step.

Practice Quiz

Test your knowledge with interactive questions

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

FAQ

Everything you need to know about this question

Why can't I just work left to right like normal?

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Because parentheses have priority over left-to-right order! When you see nested parentheses like (35(2418)) (35-(24-18)) , you must solve the innermost ones first, then work outward.

How do I keep track of all these parentheses?

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Use a step-by-step approach: Circle the innermost parentheses, solve them, then rewrite the expression. Keep doing this until all parentheses are gone!

What if I get confused about which parentheses to solve first?

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Look for the deepest level! In 43(35(2418)) 43-(35-(24-18)) , the expression (2418) (24-18) is nested deepest, so start there.

Can I remove parentheses without solving what's inside?

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Never! You must calculate what's inside parentheses before removing them. That's the whole point of the order of operations.

Why does my calculator give a different answer?

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Make sure you're entering the parentheses correctly! Many calculators require you to input them exactly as written. Try entering it step by step to match the manual calculation.

Is there a shortcut for problems like this?

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Not really - nested parentheses require careful step-by-step work. The 'shortcut' is being systematic: always innermost first, then work outward methodically.

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