If two angles are supplementary, their sum is equal to 180 degrees.
Let x be one of the supplementary angles, with a value of 125 degrees.
The other angle, y, can be represented as:
y + x = 180
Substituting the given value of x:
y + 125 = 180
Subtracting 125 from both sides of the equation:
y = 180 - 125
y = 55
Therefore, when x = 125, y = 55.
Use the relastionship between supplementary angles to determine the value of y if x = 125
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