Simplifying algebraic expressions

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

Simplify the Expression: 5(x + 2) + 2x

• 7x + 2
• 7x + 10
• 5x + 4
• 7x + 7

Simplify the Expression: -4(x + 6) + 2(x - 2)

• 2x + 28
• 6x - 20
• -2x - 28
• 6x - 28

5z - z - z -z =

• 2z
• 3z
• 4z
• z

r + r + r + 12 + 7 =

• r + 19
• 3r - 5
• 3r + 19
• 2r + 5

Identify the "like terms" in the expression: 
2x + 4y - 3x + y - x

• 2x and 4y and -3x
• 2x and -3x and x
  4y and y 
• they are all like terms
• there are no like terms

Simplify the expression: 
7(a + 8) - 5a + 4

• 2a + 60
• -5a + 60
• 2a + 56
• 7a + 4

Simplify:
17 + 7h - 19 + 14h

• 21h + 36
• 21h - 2
• 7h + 36
• 7h - 2

Simplify the expression:
6 + 2(7x - 3) 

• 14x + 12
• 14x
• 14x - 12
• 56x - 24

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

• 8x-11
• 8x+11
• 8x+5
• 8x-5