Steps in Solving

What would I do first... 3x + 9 = 18

• subtract 9

• divide by 3

• add 9

• combine like terms

What would I do first... 3(x + 2) - x = 18

• distribute

• divide by 3

• add x

• combine like terms

What would I do first... 5x - 7 + 3x = 2x + 1

• distribute

• add 7

• subtract 1

• combine like terms

Given 3x + 10 = 31... what would you do SECOND?

• subtract 10

• multiply by 3

• add 10

• divide by 3

If your variables cancelled out and you ended up with 7 = 7; what's your solution?

• IMS or Identity

• No Solution

• x = 0

• x = 7

If your variables cancelled out and you ended up with 3 = 7; what's your solution?

• IMS or Identity

• No Solution

• x = 0

• x = -4

Which of the following has no solution...

• 3x + 3 = 3(x + 1)

• 3x + 3 = 3(x + 3)

• 2x + 1 = 2x + 1

• 3x - 4 = 2x + 5

Which of the following has a solution...

• 3x + 3 = 3(x + 1)

• 3x + 3 = 3(x + 3)

• 2x + 1 = 2x + 1

• 3x - 4 = 2x + 5

Which of the following has infinitely many solutions...

• 3x + 3 = 3x

• 2x + 3 = 3(x + 3)

• 2x + 1 = 2x + 1

• 3x - 4 = 2x + 5