$\"\"$

Phrase: The sum of two times a number and five added to six times a number.

Variable: Let $\"\"$ represents the number.

Expressions: $\"\"$ .

Therefore, the algebraic expression is $\"\"$ .

Simplify the expression.

$\"\"$ (Original expression)

$\"\"$ (Associative property of addition: $\"\"$ )

$\"\"$ (Commutative property of addition: $\"\"$ )

$\"\"$ (Associative property of addition: $\"\"$ )

$\"\"$ (Add: $\"\"$ )

$\"\"$ .

$\"\"$

The algebraic expression is $\"\"$ .

The simplified expression is $\"\"$ .