Explicación paso a paso:
5x - 6 + x = 7 - 3x + 5
5x + x +3x = 7 + 5 + 6
9x = 18
x = 18 : 9
x = 2
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Explicación paso a paso:
5x - 6 + x = 7 - 3x + 5
5x + x +3x = 7 + 5 + 6
9x = 18
x = 18 : 9
x = 2