2 step equations part 2

-5x - 6 = 39

4y - 8 = 12

When solving a two-step equation which operations do you undo first? (SADMEP)

• subtraction and Addition

• addition and multiplication

• multiplication and division

• subtraction and division

Solve:

 $20=2-a$  

•  $a=18$  
  

•  $a=-18$  
  

•  $a=-10$  
  

•  $a=12$  
  

• Add 11 to both sides

• Subtract 12 from both sides

• Add 12 to both sides

• Divide -11 on both sides.

5x - 30 = 120

• x = 18

• x = -18

• x = 30

• x = -30

 $\frac{6}{5}x-10=20$  

• 15

• -15

• 25

• 6

• t = 20
• t = -20
• t = -40
• t = 40

Solve:

 $6n+4=-26$  

•  $n=-6$  
  

•  $n=-5$  
  

•  $n=8$  
  

•  $n=-4$