Linear Equations review

Solve for b:      $\frac{4b+8}{-2}=10$   

• 3

• -7

• 7

• -3

What step would you take to solve this equation?

• Multiply both sides of the equation by 2
• Divide both sides of the equation by 2
• Add 2 to both sides of the equation
• Subtract 2 from both sides of the equation

Solve for y: 2x + 2y = 18

• y = -x + 9

• y = x - 9

Solve for x: -12(x - 1) = -3(x - 1)

• 10

• 1

• 14

• 23

6w – y = 2z, for w

• $w=\frac{\left(2y-z\right)}{6}$

• $w=\frac{\left(2z+y\right)}{6}$

• $w=y-2z\left(6\right)$

• $w=6y-2z$

Solve the equation
3x = 27. 

• x = 24
• x = 81
• x = 9

In the equation
x + 7 = 12
7 is being added to the variable, x. How should you show your work to isolate the variable and solve the equation? 

• Subtract 7 from both sides. The solution is x = 5.
• Add 7 to both sides.
  The solution is x = 19.
• Multiply both sides by 7 The solution is x = 84.

y - 33 = 147

• y = 114
• y = 177
• y = 180
• Answer not Given

5 less than a number is 15.

• x - 5 = 15
• 5 - x = 15
• 15 - x = 5

Twice a number is 24.

• 2n = 24
• 2/n = 24
• 2 + n = 24
• 2 - n = 24