Quick Review As a balance scales, algebra tiles can be used to model and solve equations. Counter represents a + tile Counter represents a - tile Counter represents a variable
Explore + tile - tile variable
+ tile - tile variable On the left side, put algebra tiles to represent p – 3. On the right side, put algebra tiles to represent 10. Left side.Right side.=
+ tile - tile variable We can verify the solution by replacing p (white tile) with 13 yellow tiles. Left side.Right side. = = Left side.
MINDS ON..... x -3= 1 Step 1: Isolate the x-tile by adding 3 yellow tiles to each side. The tiles on the left side make zero pairs. Remove the zero pairs. Step 2: The tiles now become, one x tile equals 4 yellow tiles, So, x = 4. Step 3: To verify the solution: Replace the variable tile (white tile) in the original equation with 4 yellow tiles. =