Respuesta :

5x and 55 are complementary angles.

Complementary angles are two angles whose sum is exactly 90, therefore:

[tex]\begin{gathered} 5x+55=90 \\ solve_{\text{ }}for_{\text{ }}x \\ 5x=90-55 \\ 5x=35 \\ x=\frac{35}{5} \\ x=7 \end{gathered}[/tex]

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