x - [5+3x -{5x -6 -x}] = -3
x - [5 +3x -5x +6 +x] = -3
x -5 -3x +5x - 6 -x = -3
6x - 4x = -3 +5 +6
2x = -3 +11
2x= 8
x= 8/2
x= 4
Espero te sea de ayuda :)))
x-[5+3x-{5x-6-x}]=-3
x-[5+3x-5x+6+x]=-3
x-5-3x+5x-6-x=-3
x-3x+5x-x=-3+5+6
2x=+8
x=8/2
x=4
