$\"\"$

Since from the figure some of the segments are congruent,

$\"\"$ and $\"\"$ .

Find x.

$\"\"$

$\"\"$ (Add 4 to each side)

$\"\"$ (Multiply each side by 3)

$\"\"$ (Apply distributive property)

$\"\"$ (Multiply)

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

Find y.

$\"\"$

$\"\"$ (Multiply each side by 3)

$\"\"$ (Apply distributive property)

$\"\"$ (Multiply)

$\"\"$ (Subtract 7y from each side)

$\"\"$ (Divide each side by 8) $\"\"$

The value of x is 18 and y is 3.