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5x + 4 = 3 - 4(x + 2)
5x + 4 = 3 - 4x - 8
5x + 4 = - 4x - 5
5x + 4x = - 5 - 4
9x = - 9
x = - 9/9
x = - 1
Respuesta.
x = - 1
5x+4=3-4(x+2)
5x+4=3-4x+8
-8x+5x=3-4+8-4
-3x=-1+8-4
-3x=7-4
-3x=3
x=3÷-3
x= -1