Concept

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  STEP 1: Get the unknown value on one side of the equation.

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  First, subtract 1/3 from both sides of the equation. The box on the left side is now equivalent to whatever is on the other side of the equation.

  
  

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  STEP 2: Determine the values after subtracting from both sides.

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  After subtracting 1/3 from both sides, the unknown value is alone on the left side of the equation, while the right side is 1/3.