CBSE Class 7CBSE
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Solving an Equation

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  • if we add the same number to both sides of an equality, it still holds,
  • if we subtract the same number from both sides of an equality, it still holds,
  • if we multiply or divide both sides of the equality by the same non-zero number, it still holds.
  • if we fail to do the same mathematical operation on both sides of an equality, the equality does not hold.
  • In each equation variable represents a number only.
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