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1º 2º3º4x + 6x = 0 - 2 5x + 10x = 0 - 2 x + 4x - 7x = - 210x = - 215x = - 25´ - 7x = - 2x = - 2 / 10x = - 2 / 15 - 2x = - 2x = - 2 / - 2 = 2 / 2 = 1.

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Alomagber
10

1º 2º3º4x + 6x = 0 - 2 5x + 10x = 0 - 2 x + 4x - 7x = - 210x = - 215x = - 25´ - 7x = - 2x = - 2 / 10x = - 2 / 15 - 2x = - 2x = - 2 / - 2 = 2 / 2 = 1.