Question

current skill $solve the equation modeled by the algebra tiles below:1+1+1+1+1+1+1+1+1+1+1+1+1+1+1 = 5x - 1skill code: 71053

Explanation:

Step1: Count tiles, write equation

Count the yellow 1-tiles (14 total) and green x-tiles (5 total) plus the red -1 tile.
$14 = 5x - 1$

Step2: Isolate variable term

Add 1 to both sides to cancel -1.
$14 + 1 = 5x - 1 + 1$
$15 = 5x$

Step3: Solve for x

Divide both sides by 5.
$\frac{15}{5} = \frac{5x}{5}$
$3 = x$

Answer:

$x=3$