Equations with One variable

• {-1, 1}

• {-5/4, 5/4}

• {-20, 20}

• {-1, 9}

• {-24, 24}

• {-3/2, 3/2|

• {-10, 10}

• no solution

• {-10, -6}

• {-17, -1}

• {-51, 45}

• no solution

• {-22, 20}

• {-5, 9}

• {-21, 19}

• {-8, 11}

What is the FIRST step to solving the equation:

|x + 1| = 4

• Set up 2 equations

  x + 1 = 4

  x + 1 = -4

• Subtract 1 on both sides

• Set up 2 equations:

  x + 1 = 4

  x - 1 = 4

• Add 1 to both sides