Solving Linear Equations

Solve the following equation,
3x + 6 = 21

• x = 9
• x = 5
• x = 15
• x = 27

5(2x - 7) = 80

• x = 11.5
• x = 115
• x = 12
• x = 16

Solve:
7x + 19 = -2x + 55

• 4
• 14.8
• 8.2
• -4

Solve:
2(2x + 3) = -6(x + 9)

• 1.2
• 6
• -6
• 7.5

Solve for x:
2(3x + 4) + 2 = 4 + 3x

• 2
• -2/3
• 10
• -2