Respuesta :

joshsims1111

Answer:

X=2

If 21+6=27 then subtract what f(x) is (which is 18) from the 27. 27-18=6 then 3x2=6 so therefore your answer is 2. Hope this helps!!
18=3x-21+6
18=3x-15
33=3x
X=11

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