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3x+7=12-2x;1
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3x+7=12-2x;1

User Janovesk
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Explanation:


3x + 7 = 12- 2x \\ 3x + 2x = 12 - 7 \\ 5x = 5 \\ x = (5)/(5) \\ x =1

User Tkinter Lover
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