Lesson 2.1 Classwork

How many n's can we remove from both sides?

3n + 5 = 2n + 7

• 3n

• 2n

• 5

• 7

Solve for x

8x + 3 = 5x +12

• 3

• 4

• 1

• 6

4( x + 2) = 16

What is the solution to the equation?

• -2

• 0

• 1

• 2

What is the first step you should take to solve this problem?

1 + 4n - 6n = 1 - 8n

• subtract 8n to both sides

• multiply 6n to both sides

• combine the like terms 4n + -6n

The goal when solving an equation is to....

• isolate the variable.
• check the solution.
• guess and check.
• Combine Like Terms.

What is the first step you should take to solve this problem?

-3 (x - 2) = -8 + 9b

• add 8 to both sides

• subtract 9b from both sides

• Distribute -3 to the x and -2

• add 2 to both sides

• x = 1

• -3x = -3

• -3x - 6 = -9

• 2x - 6 = 5x - 9

7x - 4 = 3 + 8x

• x = 7
• x = -7
• x = 2/7
• x = 11

10x + 9 = 4x - 9

• 0
• 3
• -3
• -18