Two angles are said to be complementary angles if they add up to 90 degrees; hence:
[tex]x\text{\degree}+\left(14x+15\right)\text{\degree}=90\text{\degree}[/tex]
solving for x:
[tex]\begin{gathered} 15x=75 \\ \\ x=\frac{75}{15}=5 \end{gathered}[/tex]
ANSWER
x = 5°
14x + 15 = 85°
