Question

the algebra tiles below represent the equation $3x + 3 = x + 9$. use the model to solve for $x$. image of algebra tiles enter your next step here

Explanation:

Step1: Subtract $x$ from both sides

$3x + 3 - x = x + 9 - x$
$2x + 3 = 9$

Step2: Subtract 3 from both sides

$2x + 3 - 3 = 9 - 3$
$2x = 6$

Step3: Divide by 2 on both sides

$\frac{2x}{2} = \frac{6}{2}$
$x = 3$

Answer:

$x=3$