Since the two angles form a 90° angle, we can write the following equation:
[tex]12x+30=90[/tex]
And solve for x:
[tex]\begin{gathered} 12x+30-30=90-30 \\ 12x=60 \\ \frac{12x}{12}=\frac{60}{12} \\ x=5 \end{gathered}[/tex]
Answer:
The equation is 12x + 30 = 90
And x = 5
