équation du premier degré

Quiz yourself by guessing what should be in each of the black rectangles below before clicking on it to display the answer.
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équation
solution
2x-3=13  x=8  
3x+2=29  x=9  
x-8=3x-32  x=12  
x+2=9  x=7  


   

 
 

 
 

 

 
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