X+(x+10)+2(x+10)чач

It seems like there may be a typo or unclear notation in your expression. The Cyrillic letters "чач" at the end are not part of standard mathematical notation.

Ignoring the "чач", the algebraic expression you provided can be simplified. Given: x + (x + 10) + 2(x + 10)

You combine like terms to simplify the expression:

1. Distribute the 2 into the parentheses in the term 2(x + 10): x + (x + 10) + 2 * x + 2 * 10

2. Therefore, the expression becomes: x + x + 10 + 2x + 20

3. Combine all the x terms and constant terms: (1x + 1x + 2x) + (10 + 20)

4. Which simplifies to: 4x + 30

Now the expression is simplified.

If "чач" is intended to convey some additional instruction or operation in your original question, please clarify so that I can assist you further.