Algebra Review 1

Solve the equation. Type your work in the response box.

8x + 14 = 54

• x = 8.5

• x = 5

• x = 10

• x = 6

Answer explanation

8x + 14 = 54

Subtract 14 from each side:

8x + 14 - 14 = 54 - 14

8x = 40

Divide each side by 8:

8x/8 = 40/8

x = 5

Solve the equation. Type your work in the response box.

4x - 10 = 2x + 12

• x = 6.7

• x = 0.3

• x = 11

• x = 4

Answer explanation

4x - 10 = 2x + 12

Subtract 2x from each side:

4x - 2x - 10 = 2x - 2x + 12

2x - 10 = 12

Add 10 to each side:

2x - 10 + 10 = 12 + 10

2x = 22

Divide each side by 2:

2x/2 = 22/2

x = 11

Solve the equation. Type your work in the response box.

5(x - 3) = 2x + 6

• x = 7

• x = 3

• x = 12

• x = -5

Answer explanation

5(x - 3) = 2x +6

5x - 15 = 2x + 6

Subtract 2x from each side:

5x - 2x - 15 = 2x - 2x + 6

3x - 15 = 6

Add 15 to each side:

3x - 15 + 15 = 6 + 15

3x = 21

Divide each side by 3:

3x/3 = 21/3

x = 7