Online Self-Tests(S12)

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  1-2. Solve the equation.

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  (1 point each)

  
  

  1	3	–	3	=
  	4		2

• 
  

  3-4. Solve the equation.

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  (1 point each)

  
  

  1	1	–	1	=
  	4		2

• 
  

  5-6. Solve the equation.

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  (1 point each)

  
  

  1	3	–	1	=
  	6		3

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  7. Find the value of x.

  
  

  x	–	5	=	7
  2		8		8

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  (1 point)

  
  

  Answer:

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• 
  

  8. Find the value of x.

  
  

  3	–	x	=	1
  2		8		8

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  (1 point)

  
  

  Answer:

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• 
  

  9-10. Find the unknown values.

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  (1 point each)

  
  

  4	–	1	=	1
  3		6