Answer:
X = 8
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
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