Respuesta :

clarch19

Answer:

x = 9;  ∡W = 75°

Step-by-step explanation:

in a parallelogram, opposite angles are congruent

7x + 12 = 9x - 6

-2x = -18

x = 9

Find ∡W by substituting 9 for 'x':  7(9) + 12 = 63 + 12 = 75