Answer:
X= 2
Step-by-step explanation:
[tex](8 - x) = x + 3(4 - x) - x \\ 8 - x = 3(4 - x) \\ 8 - x = 12 - 3x \\ 3x - x = 12 - 8 \\ 2x = 4 \\ x = 2[/tex]
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