Answer:
x = 39
Step-by-step explanation:
In all parallelograms, opposite angles are congruent.
Therefore we have the equation:
[tex]3x-15=2x+24[/tex]
Solve for x:
[tex]3x-15=2x+24[/tex] add 15 to both sides
[tex]3x-15+15=2x+24+15[/tex]
[tex]3x=2x+39[/tex] subtract 2x from both sides
[tex]3x-2x=2x-2x+39[/tex]
[tex]x=39[/tex]
