The model below represents 2 x + 1 = negative x + 4.

2 green long tiles and 1 green square tile = 1 long red tile and 4 square green tiles

What is the value of x when solving the equation 2 x + 1 = negative x + 4 using the algebra tiles?

x = negative 3
x = negative 1
x = 1
x = 3