Division Property of Equality, Subtraction Property of Equality
TEKS 7(1)(C), 7(11)(A)
Example Using Models to Solve Two-Step Equations
Write the modeled equation. Then solve it.
Step 1 Represent the equation in algebra tiles. 3x + 2 = 11
Step 2 Add two −1 tiles to each side.
Step 3 On each side, the −1 and + 1 tiles make two groups of zero pairs.
Step 4 Remove the zero pairs so there are three x tiles on the left and nine + 1 tiles on the right.