Answer:
19
Step-by-step explanation:
Notice that these two triangles are comprised of the same two lines. Because of this we can assume that [tex]39 = (2x+1)[/tex]
We can proceed from here.
The parentheses are unnecessary on the right side of the equation because there is nothing else on that side. Lets remove them
[tex]39=2x+1[/tex]
Now remember that we must do OPPOSITES. do the opposite on both sides. For example lets get rid of the 1. The opposite of 1 is negative 1. So subtract 1 from both sides. We get
[tex]38=2x[/tex]
now we are making progress.....
the opposite of 2 times x is 2 divided by x. Lets divide 2 from both sides.
[tex]19=x[/tex]
SUCCESS!
