Respuesta :

popcornrox37

Answer:


Step-by-step explanation:

If you are confused as to how the answer is 9 then all we have to do is solve for c

c + 11 = 20

So in order to solve this you have to subtract 11 from 20 to get c alone on one side so...

c = (20-11)

c = 9

Sputxi
All you have to do is add 9(or c) to the equation. If c is 9, then you just have to do 9 + 11 which would equal 20.

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