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To find the value of x, we know that the angle measures must add up to 90 degrees because they are complementary.
We are given that one angle measures 25 degrees, so the other angle can be represented as 5x degrees.
Therefore, we can set up the equation:
25 + 5x = 90
Subtracting 25 from both sides gives:
5x = 65
Dividing both sides by 5 gives:
x = 13
So the value of x is 13.