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The correct equation to solve for x is:
m∠ABC + m∠CBD + m∠DBE = 180°
(x-6)° + (4x-14)° + 5x° = 180°
Combining like terms:
10x-20 = 180
10x = 200
Dividing both sides by 10:
x = 20
So, the correct equation to solve for x is:
10x - 20 = 180°