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3-87.

Solve each system of equations below. Then verify that your solution makes each equation true. Homework Help ✎


  1. Use the Equal Values or Substitution Method.

    Solve for x. If you need help doing so, refer to the Math Notes box in Lesson 2.1.3.

    Substitute 4 for x and solve for y.
    Repeat the same steps for part (b).


  2. Substitute the value of x in the first equation into the second equation: