Best Answer

3x+42=6x+12

42=6x-3x+12

42=3x+12

42-12=3x

30=3x

10=x

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Q: What does 3x plus 42 equals 6x plus 12 mean?

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y-3x+6y=12 7y=3x+12 y=3x/7 +12/7

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