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5(x - 2) - 2(x - 5) = 2x - (12 + 3x)
5x - 10 - 2x + 10 = 2x - 12 - 3x
3x = - x - 12
3x + x = - 12
x = 12/- 4
x = - 3
Respuesta.
x = - 3
5x -10 -2X +10 = 2X -12 -3x , ahora junta las X en un lado y los números en el otro
5X-2X -2X + 3X = +10 -10 -12
4X=-12 entonces X = -3