Answer:
So F=19
Step-by-step explanation:
8=f-(13-2)
8=f-11
+11 +11 You plus 11 by both sides
19=f
You can check you answer by plugging it in
8=19-(13-2)
your answer would still be 19
(4*3)+-4=8, this is just how to put it in the equation
Sent a picture of the solution to the problem (s). Proportions are a quick set up to find a part of two things being compared. You will use this method a lot in math and science.