Unit 2 Part 1 Test

6x + 1 + 7x 

• 13x - 1
• 14x 
• 7x + 6x + 1 
• 13x + 1 

2r + 2 + 5r - 2 + r 

• 8r 
• 8r - 4 
• 12r 
• 7r + 4 + r 

Simplify by combining like terms:

7v + 2 + 12 + 2v

• 23

• 23v

• 9 + 14v

• 9v + 14

• 35x+7
• 35x-1
• 35x-7
• -35x-7

Simplify the expression:
8(5 + w)

• 40 + w
• 40+8w
• 85 + 8w
• 13+8w

Simplify the following expression by combining like terms:
3(2x - 4) + 6x - 1

• 12x - 13
• 12x - 5
• 11x - 2
• -x

What is the 1st step in solving the equation?

2x - 4x = 1 - x

• -2x = 1-x

• -4x = 1 - x + 2x

• 8x = 1 - x

• 2x - 4x = 0

Which step is incorrect?

120 = -4(7a+2)

Step 1: 120 = -28a - 8

Step 2: 112 = -28a

Step 3: a=-4

• Problem is correct

• step 1

• step 2

• step 3

Which step is incorrect?

120 = 4(7a+2)

Step 1 Distribute

120 = 28a + 8

Step 2 Subtract 8 from both sides

112 = 28a

Step 3 Divide both sides by 28

a=4

• Step 1

• Step 2

• Step 3

• Problem is worked correctly

Solve: 4( x + 2) = 16

• -2

• 0

• 1

• 2