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Solving Two Step Equations. 7.1. What is being done to the variable?. 2x +1 =5 X is being multiplied by 2 and added to 1. What is being done to the variable?. Y is being divided by -7 and added by -9. Goal:.

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Presentation Transcript
what is being done to the variable
What is being done to the variable?
  • 2x +1 =5
  • X is being multiplied by 2 and added to 1
what is being done to the variable1
What is being done to the variable?
  • Y is being divided by -7 and added by -9
slide4
Goal:
  • To get x all by itself on one side of the equation. You do this by unwrapping the variable.
unwrap the variable
Unwrap the variable
  • By doing the opposite operation in the reverse order
what are the opposite operations in the reverse order
What are the opposite operations in the reverse order?

2x +1 =5

What is being done to x :

multiplied by 2 and added to 1

Opposite operation in reverse order:

subtract 1 and divide by 2

what are the opposite operations in the reverse order1
What are the opposite operations in the reverse order?
  • What is being done to y:

Dividing by -7 and adding a - 9

  • Opposite operation in reverse order:

subtract a -9 or add a 9 and multiply by-7

steps
Steps
  • Add or subtract first
  • Multiply or divide second
homework
Homework
  • Page 338 (11-34) all