Respuesta:
4
Explicación paso a paso:
12x-36-(x-(3x-4+2-1 = 2-(3-4x)
12x-36-(x-3x+4+2-1) = 2-(3-4x)
12x-36-(-2x+4+2-1) = 2-(3-4x)
12x-36-(-2x+5)=2-(3-4x)
12x-36+2x-5=2-(3-4x)
14x-36-5=2-(3-4x)
14x-41=2-(3-4x)
14x-41=2-3+4x
14x-41=-1+4x
14x-41-4x=-1
10x-41=-1
10x=-1+41
10x=40
x=40/10
× = 4
