Explicación paso a paso:
0.15x + 1.8 = 0.15x - 4 - 2
0.15x + 1.8 = 0.15x - 6
0.15x - 0.15x = - 6 - 1.8
0 = - 7.8
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Explicación paso a paso:
0.15x + 1.8 = 0.15x - 4 - 2
0.15x + 1.8 = 0.15x - 6
0.15x - 0.15x = - 6 - 1.8
0 = - 7.8