Quiz # 3 Topic 8

Solve,

 $3x-61=2x-50$  
 $x=$  ______

Solve.

 $6x-64=2x-44$ 

 $x=$  ______ 

Solve,

 $8x-90=2x-36$  
 $x=$  ______

Solve.

 $4x-18=x-3$  
 $x=$  ______

2a+4=7+a

• a = 1
• a = -3
• a = -1
• a = 3

Tags

CCSS.8.EE.C.7

10x + 9 = 4x - 9

• 0
• 3
• -3
• -18

Tags

CCSS.8.EE.C.7

What is the next step you should take?

14x + 8 = -3 - 7x

• Collect the variables (letters) on the left side

• multiply -7 to both sides

• add 14x to both sides

• subtract 7x to both sides

Tags

CCSS.8.EE.C.7

What is the next step you should take?

-11b + 8 = -3

• subtract 8 from both sides

• add -3 to both sides

• divide 8 to both sides

• multiply 3 to both sides

Tags

CCSS.8.EE.C.7

What is the next step you should take?

-11x = -11

• add 11 to both sides

• subtract 11 from both sides

• divide both sides by 11

• divide both sides by -11

Tags

CCSS.8.EE.C.7

Jacob solved the following equation using the steps shown.

Step 1 5x + 9 = 2x - 3

Step 2 3x + 9 = -3

Step 3 3x = -12

Step 4 x = -4

What operation did he perform to get from Step 1 to Step 2?

• Subtracted 2x from both sides of the equation

• Subtracted 9 from both sides of the equation

• Multiplied both sides of the equation by 3

• Added -3 to both sides of the equation

Tags

CCSS.8.EE.C.7