Finding Variable in an Equation

-7(x + 3) 

• 7x+21
• -7x-21
• -7x+21
• 7x-3

3(9 + 2d) + 4d 

• 18d+10d
• 18d-10d
• 27+10d
• 37d

Simplify the following expression:
 8a - 2(7a -3)

• 8a - 14a - 6
• -6a + 6
• -6a - 6
• -6a - 3

Solve the following equation for x:
8x - 12 = 6x

• x = 6
• x = 12/14
• no solution
• x = 2

Solve the following equation for x:
6x + 2 = 8x - 2

• x = -1
• x = 1
• x = 2
• x = 10/14

Solve the following equation for x:
10x - 3 = 3x + 32

• x = 3
• x = 4
• x = 5
• no solution

Solve the following equation for x:
3x + 8 = 8 + 3x

• x = 3
• x = 8
• identity
• x = 0

Solve the following equation for x:
4(2x - 3) = 6x + 2

• x = 5/2
• x = 7
• x = 1
• no solution

Solve the following equation for x:
4x - 9 = (-9) + 4x

• no solution
• infinite solutions
• x = 0
• x = -9

Solve the following equation for x:
10x + 2x + 5 = 8x + 4x + 7

• no solution
• infinite solutions
• x = 12
• x = 0