Multi-Step Equations

The objective when solving an equation is to....

• isolate the variable.
• check the solution.
• guess and check.
• Combine Like Terms.

Solve the equation:
-5x = 25

• x = 20
• x = -20
• x = -5
• x = 5

3c = 12

• 36

• 4

• 15

• 9

Simplify the expression: 2x + 1 + 7x 

• 10x
• 10
• 9x + 1
• 9 + 1x

6x + 2x + 1 + 4

• 8x + 5 
• 2x - 3
• 4x - 2
• 8x + 12 

-15 = 5a +12- 2a + 6

• -11
• -3
• 10
• 7

3a + 9 + 4a = 2

• -1
• 1
• no solution
• -7

4(a + 3) = -32

• -11
• -44
• -20
• -8

22 + 2a = 37 + 6 + a

• 21
• -21
• 5
• 6

Solve.

 $6a\ +\ 5a\ =\ -11$  

•  $a\ =\ 0$  

•  $a\ =\ 1$  

•  $a\ =\ -1$  

• None of these