Multi Step equation

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  • My name is Junjie
  • so... Ms.Chen? why are we facing a paint board?
  • As a "MATH" teacher my job is to teach student how to do math!
  • Hi,my name is Ms.chen
  • What exactly is multi-step equation?
  •  Multi-step equation is the use properties of equality together to isolate variables and solve algebraic equations.
  • We are facing the paint board because we are going to learn multi-step equation!
  • So,how do you do this type of equation??
  • I see in this equation there is variables in both side of the equation...
  • Let's solve the equation 2(4X+5)=2(2X+4)+4X+2
  • There are many steps and different ways to solve a multi-step equation
  • I know that we can't combine like terms beacuse the number 10 don't have a X
  •  I know that we still need to combine like terms  4X+4X will get 8X,and 2+8=10.The answer will be 8X+10
  • Next,we will need to do the same thing on the right side of the equation,so we do distributive property 2 times 2X will get 4X,and 2 times 4 will get 8.
  • First,we will need to distributive property on the left side.2 times 4x will equal to 8X,and 2 times 5 is 10.The answer will be 8x+10
  • I could like to get the variable by itself on the left side.We do the inverse operation of 8X which is division so 8X dived by 8X will elimates.
  • We see that both side equals to 8X+10,we continue to solve it by doing inverse operation to get the variables on one side of the equation
  • Now,there is only 10 in the left and 10 in the right in the equation.We do inverse operation of 10 which is subtract 10 each side will equal to 0.
  • Thank you Ms.Chen for teaching me how to do multi-step equation,I promise next time I will teach someone that needs help with this.
  • Oh,solving a multi-step equation could take many different step to get the final answer
  • The answer to this multi-step equation is infinite solution.A infinite solution could mean that any number can be X and both side will equal to each other.
  • Junjie I hope that you will know how to do this type of equation  next time when he see this type of equation. 
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