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5 - 3( - 2x + 7) - 3x = - 7x + 3( - 2x - 6) =
5 + 6x - 21 - 3x = - 7x - 6x - 18
3x - 16 = - 13x - 18
13x + 3x = - 18 + 16
16x = - 2
x = - 2/16
x = - 1/8
Respuesta.
x = - 1/8
5 + 6x - 21 - 3x = - 7x - 6x - 18
3x-16 = - 13x-18
13x+3x = - 18+16
16x = - 2
x =