Question

what is the variable for 4x+5=x+8

Answer 1

x is the variable you want to solve for.

4x + 5 = x + 8                            Original Problem.
3x + 5 = 8                                  Subtract x from each side.
3x = 3                                        Subtract 5 from each side.
x = 1                                          Divide each side by 3.

Answer: x = 1

Answer 2

X=1 is the answer to this question hope that helps