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4x-12-2x+2=-2x-4-14
2x-10=-2x-18
4x=-18+10
4x=-8
x=-2
4x - 12 - 2x + 2 = - 2x - 4 - 14
4x - 2x - 12 + 2 = - 2x - 4 - 14
2x - 10 = - 2x - 18
2x + 2x = - 18 + 10
4x = - 8
x = - 8/4
x = - 2
Solución :
x = - 2