Math 8 Review Unit 1

n - 6 = -15

• n = -21
• n = -9
• n = 9
• n = 21

Tags

CCSS.6.EE.B.7

What would we do to solve for b?

10 = -7 + b

• Subtract 7 from both sides

• Divide both sides by -7

• Add 7 to both sides

• Multiply both sides by 7

What is the first step to solve this equation:
  3x = 44

• Add 3 to both sides
• Subtract 3 from both sides
• Multiply 3 on both sides
• Divide 3 on both sides.

Tags

CCSS.6.EE.B.7

-y = 22

• y = 1
• y = -22
• y = 0
• y = -1

Tags

CCSS.6.EE.B.7

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides
• Subtract 11 from both sides
• Add 11 to both sides
• Divide 3 on both sides.

Tags

CCSS.7.EE.B.4A

 $Solve\ for\ \Delta:\ \ \ \ \ \ 3\Delta-5=16$   

• 3

• 7

• 18

• 21

How many solutions (if any) does this equation have?

2(x + 5) = 2x + 5

• one solution

• no solution

• infinitely many solutions

Solve the equation:
3(x - 1) = 2x + 9

• x = 12
• no solution
• x = 10
• x = 6

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

How many solutions, if any, does the equation have? 

 $6x+1=6x+3$  

• One solution

• No solution

• Infinite solutions

What would we do to solve for x?

-6x=24

• Add 6 to both sides

• Subtract 6 from both sides

• Divide both sides by 6

• Divide both sides by -6