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X-9=12
x-9+9=12+9
You need to add 9 to each side of the equation.
x=21
Here given,
and 
we have to find
which means the subtracting of the functions f(x) and g(x).

= 
= 
=
( we know that multiplication of negative and negative is positive)
= 
=
We have got the required answer here.

First you would need to add up all of the data given, then divide the sum by 9 because there is 9 pieces of data. So it would be 229/9=25.4444444 repeating.
Answer: 2x - 1 > 0 ( x = 1)
Step-by-step explanation: