Plz asap solve simmilar triangles (basic)

By similarity of triangles we have the following relationship:

 (x) / (6) = (18) / (9)

 Simplifying we have:

 (x) / (6) = 2

 Clearing the value of x we have:

 x = 6 * 2

 X = 12

 The value of x for this case is equal to:

 X = 12

practice. practice. practice.

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step-by-step explanation: