PLS HELP ITS A MAJOR GRADE AND ITS MY LAST QUESTION I JUST CANT SOLVE IT THE BEST ANSWER WILL GET BRAINLIEST

The perimeter of the classroom shown is 6x + 3. Find the length of the missing side

x
(6x + 3) + (3x +1) + x + x
6x + 3x + x + x +3 + 1
11x + 4
3x+1
The length of the missing side is 11x + 4.
Pls show
Correct Work/ Solution
Identify and explain the error
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Missing side = x+2

Step-by-step explanation:

The perimeter of the classroom, 6x+3, is equal to the 4 side lengths added up.

In their first line of work, the first plus sign should be an equal sign as follows:

6x+3 = 3x+1+x+x+?

simplify

6x+3 = 5x+1+?

subtract (5x+1) from both sides

x+2 = ?

There's the length of the missing side.

answer: approximately 206 bones

i hope this u out a branlist and a would be greatly appreciated :

cant open file sorry!

step-by-step explanation: