3'3 Solving Multiple Step Equations

1
3.3 Solving Multiple Step Equations

• Goal Use two or more steps to solve a linear
  equation

2
Rules for Solving Equations

• 1) Goal Isolate the variable.
• 2) Undo operations with their opposite
  operation.
• Always do the same thing to both sides of the
  equation.
• Easiest to undo add/subtract before
  multiply/divide.

3
Solve.
2)
1) 5x 4 39
-4 -4
4 4
5x 35
5 5
(3)
(3)
x 7
x 18
4
Solve.
6(x 4) - 2(x - 7) 10
6x 24 - 2x 14 10
4x 38 10
-38 -38
4x -28
4 4
x -7
5
Solve.
3(x - 2) 17
3x - 6 17
6 6
3x 23
3 3
6
Solve.
-(5 - x) 9
-5 x 9
5 5
x 14