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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