C ommon numbers or letters and common operation sign.
  • See if each side of the equation has the same numbers and operation signs.

 
O pposite position.
  • Check if the numbers or letters on one side are in the opposite position on the other side.
M irror image.
  • The right side of the equation is the mirror image of the left side.

     
A ddition or multiplication?
  • The operation signs are either addition signs (+) or multiplication signs (X).
S ame total.
  • The total of each side is equal.
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