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6(x+9)-2=10x+2(x-2)+106x + 45 - 2 = 10x + 2x - 4 + 10
6x + 43 = 12x + 6
restamos -6x a cada lado
43 = 6x + 6
restamos -6 a cada lado
6x = 37
dividimos entre 6 cada lado:
x = 37/6