Anyone know how to do??

Step-by-step explanation:
here it is
hope u get it
don't forget to change the signs when u trasfer the terms
Answer:
Hello!!! Princess Sakura here ^^
Step-by-step explanation:
Since those two angles are corresponding that means they are equal to each other so we write an equation like this...
[tex]7x+9=8x+2[/tex]
Now we solve for x...
[tex]7x+9=8x+2\\9=x+2\\x=7[/tex]
And that's it x will equal 7.