$\"\"$

Observe the figures:

Find the $\"\"$ value rectangles have same area.

The area of the first rectangle is $\"\"$ and the area of the second rectangle is $\"\"$ .

The area of the first rectangle is equal to area of the second rectangle.

The equation represent as $\"\"$ .

Solve the equation.

$\"\"$ (Original equation)

$\"\"$ (Distributive property: $\"\"$ )

$\"\"$ (Subtract $\"\"$ from each side)

$\"\"$ (Apply additive inverse property : $\"\"$ )

$\"\"$ (Divide each side by $\"\"$ )

$\"\"$ (Cancel common terms)

Since, the value of $\"\"$ is $\"\"$ .

$\"\"$

The value of $\"\"$ is $\"\"$ .