Question

2+3[x-(3x+1)]=5[x-(2x-1)]

Answer 1

2+3[x-3x-1]=5[x-2x+1]
2+3[-2x-1]=5[-x+1]
2-6x-3=-5x+5
-6x+5x=5-2+3
-x=6
x=-6

Answer 2

Primeiro tem que resolver o que esta entre parentese

2+3[x-(3x+1)]=5[x-(2x-1)]
 
           2                2
2+3[ -3x -x]= 5[-2x +x]

2 -9x-3x= -10x +x

-12x+10x-x= -2
-3x=-2
x=2/3