Practice QUIZ: Simplifying and solving

Simplify the expression: 2x + 1 + 7x 

• 10x
• 10
• 9x + 1
• 9 + 1x

Simplify the expression: 7+3(1 - 2x) 

• 21 - 6x
• 10 - 2x
• 10 - 20x
• 10 - 6x

3(2x+1)+2(x-4)

• 8x-3
• 8x+11
• 4x-5
• 8x-5

Simplify the following expression:
5(1 - 8x)

• -33x + 5
• -5 + 40x
• 47x + 5
• 5 - 40x

Which expression is equal to 3(5x - 6) - 2(4x + 5)?

• 7x - 1
• 7x - 28
• 9x - 1
• 9x - 13

What is the first step to solving this equation?

5x + 7 = 12

• Divide by 5

• Subtract 5

• Multiply by 7

• Subtract 7

2x - 3 + 4x = 27

• x = 12

• x = 4

• x = 5

• x = 15

Solve the equation for x.

10x + 9 = 4x - 9

• x = 0

• x = 3

• x = -3

• x = -18

 Solve the equation for x.
-8x - 8 + 3x - 6 = -3x + 2

• x = -8
• x = 8
• x = 2
• x = -2

 Solve the equation for x.
 -3x + 5 = -13

• x = -5
• x = 2
• x = -6
• x = 6