Multiple Choice

An HVAC technician is calculating two complementary angles, x and y, for a custom ductwork transition where the difference between the angles is 26 degrees. The technician sets up the following system of equations:

x + y = 90 x - y = 26

When the technician adds these two equations together to solve for x using the elimination method, which of the following is the correct resulting equation?

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Updated 2026-04-21

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