Solve the Number Sequence: 9-7+4+5 Step by Step

Q: Why can't I just add the positive numbers first?

Because order matters in math! $ 9-7+4 $ means subtract 7 from 9 first, then add 4. If you add first, you're solving a different problem entirely.

Q: What if I get confused about which operation to do first?

Remember: when operations have the same precedence (like addition and subtraction), always work left to right. Think of reading a sentence!

Q: What happens if I have more complex expressions like this?

The same rule applies! Always follow PEMDAS/BODMAS order, and when operations have equal precedence, work left to right consistently.

Order of Operations with Mixed Signs

$9-7+4+5=$

❤️ Continue Your Math Journey!

We have hundreds of course questions with personalized recommendations + Account 100% premium

Step-by-step video solution

Watch the teacher solve the problem with clear explanations

Step-by-step written solution

Follow each step carefully to understand the complete solution

Understand the problem

$9-7+4+5=$

Step-by-step solution

To solve $9-7+4+5$ :

Start with the first operation: $9 - 7 = 2$ .
Next, add 4: $2 + 4 = 6$ .
Finally, add 5: $6 + 5 = 11$ .

So, the correct answer is $11$ .

Final Answer

Key Points to Remember

Essential concepts to master this topic

Left-to-Right Rule: Work from left to right for addition and subtraction
Technique: Calculate step by step: 9-7=2, then 2+4=6, then 6+5=11
Check: Verify by working backwards: 11-5=6, 6-4=2, 2+7=9 ✓

Common Mistakes

Avoid these frequent errors

Adding all positive numbers first then subtracting
Don't calculate 9+4+5-7 = 11! This ignores the left-to-right order and changes the meaning of the expression. Always follow operations from left to right when they have equal precedence.

Practice Quiz

Test your knowledge with interactive questions

Solve the following equation:

$12+7-5\text{ }=$

FAQ

Everything you need to know about this question

Why can't I just add the positive numbers first?

Because order matters in math! $9-7+4$ means subtract 7 from 9 first, then add 4. If you add first, you're solving a different problem entirely.

What if I get confused about which operation to do first?

Remember: when operations have the same precedence (like addition and subtraction), always work left to right. Think of reading a sentence!

How do I avoid making calculation errors?

Write down each step! Don't try to do it all in your head. Show: $9-7=2$ , then $2+4=6$ , then $6+5=11$ .

Is there a trick to check my answer quickly?

Yes! Work backwards from your answer. If you got 11, check: $11-5=6$ , $6-4=2$ , $2+7=9$ ✓

What happens if I have more complex expressions like this?

The same rule applies! Always follow PEMDAS/BODMAS order, and when operations have equal precedence, work left to right consistently.

🌟 Unlock Your Math Potential

Get unlimited access to all 18 Order of operations for beginners questions, detailed video solutions, and personalized progress tracking.

📹

Unlimited Video Solutions

Step-by-step explanations for every problem

📊

Progress Analytics

Track your mastery across all topics

🚫

Ad-Free Learning

Focus on math without distractions

No credit card required • Cancel anytime