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To solve for x, we know that the sum of the angles in a triangle is always 180 degrees.
So, we can set up the equation as follows:
8x + 6 + 60 + 90 = 180
Combine the like terms:
8x + 156 = 180
Subtract 156 from both sides:
8x = 24
Divide by 8:
x = 3
Therefore, x = 3.