Simplifying and Solving

Simplify:

3x-5x

• 2x
• 8x
• -2x
• 15x²

Simplify the expression: 2x + 1 + 7x 

• 10x
• 10
• 9x + 1
• 9 + 1x

Simplify the expression: 7v + 2 + 12 + 2v

• 23
• 23v
• 9 + 14v
• 9v + 14

Simplify the following expression:
19 - ( 3 - 5b)

• 16 + 5b
• 21 + 5b
• 16 - 5b
• 21 - 5b

Simplify the following expression:
(5 + 4x) + (2x - 8)

• 13 + 6x
• 6x - 3
• 6x - 13
• 6x + 3

What is the first step in solving this equation:
5x + 7 = 12

• Divide by 5
• Subtract 5
• Multiply by 7
• Subtract 7

Solve.   n - (-2) = -14

• -16
• 16
• 12
• -12

Solve for d:
-7(6 + d) = 49

• 13
• 1
• -1
• -13

Solve   -3x + 5 = -16

• 9
• 8
• -7
• 7

Solve for x.

• x = 21
• x = 7
• x = −21
• x = 4