Resposta :

3478elc

 

 x-3= (x+1+2x)/2. mmc = 2

 

2x - 6 = x +1 + 2x 

 

-6 -1 = -2x+2x + x 

 

x = - 7

MATHSPHIS

x-3= (x+1+2x)/2  ->

2(x-3)=x+1+2x

2x-6=3x+1

-6-7=3x-2x

-13=x

x=-13

 

 

 

 

 

 

 

 

 

 

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