Wetzel

Math 155

6.2 – Linear Equations in One Variable

What is a linear equation?     ( all variables have an exponent of one )

            Def. -

            To Solve:

            1.)  Simplify each side of the equation.

            2.)  Get the variables you are solving for on one side of the equation.

            3.)  Isolate the variable by using PEMDAS backwards.

            4.)  Check the answer!

Example:

1.)  x – 4 = 7                2.)    8x = 56                 3.)                       

4.)  3m – 11 = 9m + 5                          5.)  5t + 72 +8t = 17t – 28 + 11t         

6.) -7 + 6n + 21 = 28 + 6n                   7.)  P = a + b + 2c;  solve for c.

HW:  p.321 #1 – 41odd, 69 – 77odd (Solve each equation)