Respuesta :

X=9

3x-12=x+6
2x-12=6
2x=18
X=9

The value of x is 9 cm in the given parrallelogram.

Step-by-step explanation:

=> (3x-12) =(x+6)

or,3x - x = 6 + 12

or,2x = 18

or,x = 18/2

•: x=9#

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