Answer: 13 degrees and 167 degrees
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Work Shown:
x = unknown angle
y = supplementary to angle x
x = y - 154
x+y = 180 since they are supplementary
y-154+y = 180
2y-154 = 180
2y = 180+154
2y = 334
y = 334/2
y = 167
x = 180-y = 180-167 = 13
The two angles are 13 degrees and 167 degrees.