Day 5 combining like terms equations

Day 5 combining like terms equations

• 1.
  1 Do Now AIM: SolvingMulti- Step Equations by Combining Like Terms
• 2.
  2 x 1 ­1 ­x a.) -3x+ 3 + x - 1 - 2 ­x ­x ­x 1 1 1 x­1 ­1 ­1
• 3.
  3 Terms: are numbers,variables, or products of numbers and variables. Terms in an expression are separated by addition and subtraction symbols. (Example: 3x + 5 + x - 7) Coefficients: A number that is multiplied by a variable. (Example: 4x, 4 is the coefficient) Like Terms: terms with the same variable raised to the same power.
• 4.
  4 x 1 ­1 ­x b.) 3- 4x - 5 + 2x 1 1 1­x ­x ­x ­x ­1 ­1 ­1 ­1 ­1 x x
• 5.
  5 Simplify the followingby combining like terms. c.) -9 + 10x - 15 - 4x - 11x d.) 5x - 4x - 10 - x + 10
• 6.
  6 ALGEBRA The Search forUnknowns Objective: Isolate the variable to find its value RULES 2.) Use inverse operations 1.) Keep the equation balanced 12x - 7 - 3x = 11 Create a rule that we need to add to be able to solve an equation like this.
• 7.
  7 x 1 ­1 ­x 12x -7 - 3x = 11
• 8.
  8 ALGEBRA The Search forUnknowns Objective: Isolate the variable to find its value RULES 2.) Use inverse operations 1.) Keep the equation balanced -2b + 7 - 3b = 2
• 9.
  9 x 1 ­1 ­x -2b +7 - 3b = 2 ­x ­x 1 1 1 1 1 1 1 ­x ­x ­x 1 1
• 10.
  10 ALGEBRA The Search forUnknowns Objective: Isolate the variable to find its value RULES 2.) Use inverse operations 1.) Keep the equation balanced -15 = -5y + 1 + 3y
• 11.
  11 x 1 ­1 ­x -15 =-5y + 1 + 3y ­1 ­1 ­1 ­1 ­1 ­1 ­1 ­1 ­1 ­1 ­1 ­1 ­1 ­1 ­1 ­x ­x ­x ­x ­x 1 x x x
• 12.
  12 -15 = -5y+ 1 + 3y CHECK
• 13.
  13 ALGEBRA The Search forUnknowns Objective: Isolate the variable to find its value RULES 2.) Use inverse operations 1.) Keep the equation balanced 9 - 9x + 6x - 15 = -45
• 14.
  14 x 1 ­1 ­x 9 -9x + 6x - 15 = -45
• 15.
  15 9 - 9x+ 6x - 15 = -45 CHECK
• 16.
  16 BEFORE YOU LEAVE Howwould you explain today's lesson to a student who was absent today? AIM: Solving Multi- Step Equations by Combining Like Terms
• 17.
  17 Homework: Pages 566-567#1-3 all, 8, 9, 45 Mr. Tjersland's Math 7
• 18.
  18 12x - 7- 3x = 11 AIM: Solving Multi-Step Equations by Combining Like Terms
• 19.
  19 12x - 7- 3x = 11 CHECK
• 20.
  20 -15 = -5y+ 1 + 3y