Unit 1A Review

Solve for x:

-10x + 6 = 8x + 15

• x = 1/2

• x = 2

• x = -1/2

• x = -2

Phillip solved the following equation:

Step 1: 8x + 4(x + 5) = 56

Step 2: 8x + 4x + 20 = 56

Step 3: 12x + 20 = 56

Step 4: 12x = 36

Step 5: x = 3

Which best describes what Phillip did to get from Step 2 to Step 3?

• He used the Distributive

  Property

• He combined like terms.

• He used the Addition Property of Equality.

• He used the Multiplicative Inverse Property.

Which of the following has exactly ONE solution?

• 3x + 1 = 3x - 8

• 5x - 4 = 5x - 4

• 8x - 2x + 5 = 6x + 5

• 7x - 2 = 4x + 6

Lanie solved the following equation:

10 - (4x + 3) = -5x + 12

Line 1: 10 - 4x + 3 = -5x + 12

Line 2: 13 - 4x = -5x + 12

Line 3: 13 + x = 12

Answer: x = -1

What mistake did Lanie make?

• She didn't distribute the negative correctly in Line 1.

• She didn't combine like terms correctly from Line 1 to Line 2.

• She didn't divide correctly for the final answer.

• She didn't use the Subtraction Property correctly from Line 3 to Line 4.

Solve correctly: 10 - (4x + 3) = -5x + 12

• x = 5

• x = 9/11

• x = -5/9

• x = 1

• m = 1

• m = 3

• m = 3/4

• m = 7/8

How many solutions for the following equation:

12x + 5 - 7x = 5x + 5

• No Solution

• One Solution

• Two Solutions

• Infinitely Many Solutions

What value of x makes the equation true?

7(x - 3) = 56

• x = 5

• x = 59/7

• x = 11

• x = 8

What is the solution to the equation:

2x + 6 - 3x = 5

• x = -1

• x = 1

• x = 0

• x = -1/5

How many solutions?

3(6x - 1) = 18x - 1

• No Solution

• One Solution

• Infinite Solutions

• Two Solutions