For which value of x is the equation 3 (x+2) + x=2x+16 true?

1) take the first part of the equation and work it by multiplying (x+2) by 3

3 (x+2) + x

3x + 6+x

2) put the answer you got into the question you were given

3x + 6+x = 2x + 16

3) group the x variables and the non x variables

3x + x - 2x = 16 - 6

4) Now work the equation you have

3x+x-2x=16-6

4x-2x=16-6

2x=16-6

2x=10

5) you divide both sides by the x variable

2x=10

2x/2 = 10/2

x=5

therefore x is 5