Respuesta :

Answer:

X = 8

Step-by-step explanation:

Start with the angles it gives you

9x + 1 = (7x -12 ) + (5x - 11)

Sum it up

9x + 1 = 12x - 23

Get the letters on one side , numbers on the other

9x - 12x = -24

3x = -24

x =  -24 / 3

X = 8

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