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Mathematics 18 Online
domperes:

For which equation is x = -1/3 not a solution? A. 7 + 9x = 4 B. 6x – 5 = 7 C. 18 + 9/x = -9 D. 12x + 8 = 4

Vocaloid:

simply plug in x = -1/3 into all four choices and see which one doesn't give you an equal result on both sides

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