Which equations have the variable term in the equation –6 + 2x = 6x – 9 isolated to one side of the equals sign, and the constant isolated to the other side? Select all that apply.

Start with –6 + 2x = 6x – 9. Subtract 2x from both sides and add 9 to both sides to get 3 = 4x, which has the variable term on one side and the constant on the other (choice D). Reversing the sides gives –4x = –3 (choice C), which has the same arrangement. Choices A and E still have constants or variable terms mixed on a side, and B puts the variable term and constant together on one side.

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