In the drawing below, angle qrs is bisected by . what is the measure of ?

Theres no drawing but if you are bisecting an angle the measure is most likely going to be half of what ever qrs is.

You need to bring all the variables to one side and the constants to the other side.
an example:-

12x + 5 =  3x + 32
add -3x to both sides
12x - 3x  + 5 = 3x - 3x + 32
9x + 5 = 32
now add -5 to both sides
9x + 5 - 5 = 32 - 5
3x = 27

THe important point is to keep the equation in balance by performing the same operation on both sides of the '='.

Hope this helps