Respuesta :

Assuming the figure is a parallelogram,

Also,

But 115 = (6x+11) + (4x+6)

115 = 6x - 11 + 4x + 6

115 = 6x + 4x - 11 + 6

115 = 10x - 5

10x = 115 + 5

10x = 120

x = 120/10

x = 12

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