Solve the Equation: Finding the Number in x - 0 = 63

Q: Why doesn't subtracting zero change the number?

Subtraction means taking away or removing something. When you subtract zero, you're taking away nothing, so the original number stays exactly the same!

Q: Is this always true for any number?

Yes! The property $ x - 0 = x $ works for any real number - positive, negative, fractions, decimals, even zero itself.

Q: What if it was 0 - 63 instead?

That would be completely different! $ 0 - 63 = -63 $ because you're starting with zero and taking away 63, which gives you negative 63.

Q: How is this different from adding zero?

Both adding zero and subtracting zero leave the number unchanged. These are called identity properties: $ x + 0 = x $ and $ x - 0 = x $.

Q: Could the answer be anything other than 63?

No! Since $ ? - 0 = 63 $ and subtracting zero doesn't change a number, the only possible answer is 63.

Subtraction Properties with Zero

$?-0=63$

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations

00:00 Find the unknown

00:04 Any number minus 0 equals the number itself

00:09 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution

Understand the problem

$?-0=63$

Step-by-step solution

To solve this problem, we need to understand the effect of subtracting zero from any number:

Step 1: Recognize the property of subtraction involving zero, which states $x - 0 = x$ for any real number $x$ .
Step 2: Applying this property to the given equation $? - 0 = 63$ , we see that removing zero from a number does not change its value. Therefore, the unknown value must equal the result.

With these steps, it becomes clear that the value of the unknown, represented by the question mark, is simply 63.

Thus, the solution to the problem is $63$ .

Final Answer

Key Points to Remember

Essential concepts to master this topic

Zero Property: Subtracting zero from any number leaves it unchanged
Technique: Apply identity property: $x - 0 = x$ directly
Check: Verify that $63 - 0 = 63$ equals the given result ✓

Common Mistakes

Avoid these frequent errors

Overthinking the zero subtraction property
Don't try to perform complex calculations or think this is a trick question = confusion and wrong answers! The zero property is straightforward: subtracting zero changes nothing. Always recognize that $x - 0 = x$ is a fundamental identity.

Practice Quiz

Test your knowledge with interactive questions

$$ 2+0= $$

FAQ

Everything you need to know about this question

Why doesn't subtracting zero change the number?

Subtraction means taking away or removing something. When you subtract zero, you're taking away nothing, so the original number stays exactly the same!

Is this always true for any number?

Yes! The property $x - 0 = x$ works for any real number - positive, negative, fractions, decimals, even zero itself.

What if it was 0 - 63 instead?

That would be completely different! $0 - 63 = -63$ because you're starting with zero and taking away 63, which gives you negative 63.

How is this different from adding zero?

Both adding zero and subtracting zero leave the number unchanged. These are called identity properties: $x + 0 = x$ and $x - 0 = x$ .

Could the answer be anything other than 63?

No! Since $? - 0 = 63$ and subtracting zero doesn't change a number, the only possible answer is 63.

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