Subtraction 4809

I think the number when I multiply the imaginary number by three, we divide by the number 4 from the product of subtraction 4, and I add the imaginary number again to the proportion of 4. Which number do I think?

Correct answer:

x =  7

Step-by-step explanation:

(3x - 9)/4 +4 = x

(3·x - 9)/4 +4 = x

x = 7

x = 7/1 = 7

x = 7

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