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To solve this problem, we need to set up an equation and solve for x.
Based on the given information, we know that the sum of the two adjacent angles is equal to 107°:
(x - 5) + (3x) = 107
Combining like terms:
4x - 5 = 107
Adding 5 to both sides:
4x = 112
Dividing both sides by 4:
x = 28
Now that we have the value of x, we can substitute it back into the expressions for the unknown angles to find their measures:
First angle: x - 5 = 28 - 5 = 23°
Second angle: 3x = 3(28) = 84°
Therefore, the two unknown angles are 23° and 84°.