Answer: (2x+14) + (x+7) = 90
Explanation:
Since the angles DBC and CBA share a common vertex of B and are perpendicular to the 90-degree angle beside them, they are complementary angles, meaning that the sum of their angle measures is 90 degrees. Knowing this, you can set up the equation (2x+14) + (x+7) = 90 in order to find the value of x.
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