Helppp me find x plz

x = 5

Step-by-step explanation:

The ≅ sign means that both triangles are congruent, also meaning they're exactly the same. So with this in mind, the equations naturally equal each other:

3x + 3 = 5x - 7

Subtract 5x from both sides

-2x + 3 = -7

Subtract -3 from both sides

-2x = -10

divide by -2 to both sides

x = 5

The dimensions would be x and x+6. The area is 216.

x(x+6) = 216
x^2 + 6x - 216 = 0
(x-12)(x+18) = 0

x = 12---Yes---
x = -18---No, sides cannot be negative---

If one side is 12, the other side is 18. To check:

12 * 18 = 216
216 = 216

Correct