$\"\"$

The perimeter of the pentagon is sum of 5 sides.

Perimeter $\"\"$ .

$\"\"$ (Substitute 35 for P)

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

$\"\"$ (Subtract each side by 31)

$\"\"$ (Apply additive inverse property: $\"\"$ )

$\"\"$ (Apply additive identity property: $\"\"$ )

$\"\"$ (Subtract: $\"\"$ )

The value of x is 4. $\"\"$

$\"\"$ The equation can be used to find x is $\"\"$ .

The value of x is 4.