Multi-Step Equations Review

Solve:
8x + 4y = 16    ,  for     y

• y = -2x + 4

• y = 2x - 4

• y = 2x + 4

• y = -2x - 4

Solve for x. 
x + 7g = 9

• x = 9 - 7g

• x = 9 / 7g

• x = 9 + 7g

• x = 7g - 9

An equation has ____________ when you simplify and the variable terms on each side are the same, AND the constants are the same.

• one solution

• two solutions

• no solution

• infinite solutions

3x + 2(4x - 4) = 3

• 4

• 3

• 2

• 1

After moving the constant to one side in the following equation, what would be the result: 70x + 48 = -22

• 70x = 70

• 70x = -70

• 70x + 70 = 0

After combining like terms in the following equation, what would be the result: 64x + 48 = -8x - 22 + 2x

• 64x + 48 = -10x -22

• 112 = -28x

• 64x + 48 = -6x - 22

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

22 + 2a = 37 + 6 + a

• 21

• -21

• 5

• 6

Solve for x.

• 55

• 60

• 15

• 35