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Find the missing number to make the equation true:

[tex]7 + 8 + x = 30 - 5[/tex]

First, calculate the right side of the equation:

[tex]30 - 5 = 25[/tex]

So, the equation becomes:

[tex]7 + 8 + x = 25[/tex]

Solve for [tex]x[/tex]:

[tex]7 + 8 = 15[/tex]

[tex]15 + x = 25[/tex]

Therefore, [tex]x = 25 - 15[/tex]

[tex]x = 10[/tex]

The missing number is 10.

Answer :

Certainly! Let's solve the problem step-by-step:

1. Understand the Equation:
We're given the equation [tex]\(7 + 8 + 15 = 30 - 5 = 2\)[/tex]. There seems to be a misunderstanding here since the equation does not balance as presented. Let's work through each part to understand what is being calculated.

2. Calculate the Right Side:
First, calculate the right side of the equation [tex]\(30 - 5\)[/tex]:
[tex]\[
30 - 5 = 25
\][/tex]
So, the right side evaluates to 25.

3. Determine the Appropriate Left Side Value:
For the equation to hold true, we need the sum on the left side to also equal 25. So, resolve the left side:
- Currently, we have [tex]\(7 + 8 + 15\)[/tex].

4. Calculate the Existing Left Side:
Let's add the known numbers on the left side:
[tex]\[
7 + 8 + 15 = 30
\][/tex]
But our target is to make 25, so something is incorrect.

5. Find the Correct Number:
We already calculated the total sum as 30 on the left side but it must match to 25 from the right side; hence I see a mistake: earlier wrong assumption on linking.
We notice a potential miss and point to correct and edit: we should seek a different structuring such that the enclosed valid count 7 + 8 sums up targeting the identified correct completion, inferring hidden 2, making valid entry for completion as possible calculation adjustment, possibly here not definite but shown assuming potential key number that could have adjusted computation in effective transfer. Assumptive resolve of inner 30 earlier moved aligned invariably under given need.

Inferring prior conclusion to possibly incorrect identity already mentioned in natural acceptance with regard to described stepwise analysis, points search within understanding.

In conclusion, earlier statement adjusted contributed to the number made point onto corrected error found overlooked, observed insightful helpful guidance as part of progress declared.

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