Algebra tiles visually represent the process of solving equations by organizing positive and negative units into "tiles" that stand for variables and constants. Here’s a guide to understanding the tiles and solving a simple equation using them.

Algebra Tiles Key:

1. Positive x-tile: Represents $+x$, usually a large rectangle.
2. Negative x-tile: Represents $-x$, a large rectangle with a different color or shade.
3. Positive unit tile: Represents $+1$, typically a small square.
4. Negative unit tile: Represents $-1$, a small square with a different color.

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Example Equation:

Let’s solve the equation: $x + 3 = 5$

Visual Representation and Steps:

1. Set up the left side ($x + 3$):

   • Place one positive x-tile.
   • Place three positive unit tiles to represent $+3$.

2. Set up the right side ($5$):

   • Place five positive unit tiles to represent $+5$.

3. Goal:

   • Isolate $x$ on the left side.

4. Eliminate the constants on the left:

   • Remove three positive unit tiles from both sides.

5. Result:

   • Left side: $x$ tile.
   • Right side: Two positive unit tiles, indicating $x = 2$.

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I can create a visual of this setup if you're interested!