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Solve each of the following equations. Explain or justify each of your steps. Be sure to show your work carefully and check your answers.

  • Distribute, then simplify.

  • Begin this problem by distributing the and the negative that are outside of the parentheses, then simplify by isolating the variable onto one side of the equation.

  • Use the same methods outlined in parts (a) and (b) to solve parts (c) and (d). Check your answer.