Answer:
To get an expression relating to x you need to have x alone on one side of your equation. ie x =
Try this:
rx - st = r
remove st from the rx side
rx = r + st
now divide by r
x = (r + st)/r
You now have your expression relating to x
Option B) A and C I think
Answer:
-6 33/40
Step-by-step explanation:

Answer:
Answer is C
Step-by-step explanation: