Solving Equations and Functions

What is the first step you should do to solve this equation?

• Add 31 to both sides

• Subtract 31 from both sides

• Subtract 5 from both sides

• Divide by -6 on both sides

Solve this equation.

20 = 2 - a

• a= 18
• a= -18
• a= -10
• a= 12

-3a + 8 = 14

• a= -2
• a= -7.5
• a= 2
• a= 6

6 - 3a = 21

• a= 9
• a= -9
• a= -5
• a= 5

• 145

• 165

• 180

• 190

15 = 2a + 7

• 2
• 4
• 12
• 14

9 = 2s + 1 

• 4
• -4
• 3.5
• 5

5x - 14 = 8x + 4

• x = 6
• x = -6
• x = -18/13
• x = 10/3