Evaluating Expressions and Solving Equations

• 42

• 14

Solve the equation

x + 9 = 21

3c + 5 = 23

    2x + 6 = 14

• -15

• 56

• 34

• 12

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

• 4

• 3

• 2

• 1

Solve for x:
5x - 14 = 8x + 4

• x = 6

• x = -6

• x = -18/13

• x = 10/3

Evaluate 3a - 2b when a = 4 and b = 3

• 18

• 6

• 11

x² - xy if x = 8 and y = -3

• 88

• 40

• -8

• -24