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Answered

Supprime les parethèses puis réduis les expressions suivantes:

 

A: -(1/3x+2)+(5x-3)

B: (2/3x+1/3)-(5/6+2/6x)

C:(1/2+2x-(x-3/2)

Sagot :

A)   
-(1/3x+2)+(5x-3)
= - 1/3x-2 + 5x-3
= -1/3x+5/1x -5
=-1/3x+15/3x-5
= -16/3x-5


B) 
(2/3x+1/3)-(5/6+2/6x)
= 2/3x+1/3-5/6-2/6x
= 4/6x-2/6x+2/6-5/6
= 2/6x-3/6


C)
(1/2+2x-(x-3/2)
= 1/2+2x-x+3/2
= 1x+4/2
= x+2