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6.4 x 10-9
45-5x = 5x+55 -5x-5x = 55-45 -10x = 10 x = -1
2X2+5x-12 4+5x-12 -8+5x 5x-8
MgCl2 aq plus Zn s is the oxidation half-reaction for Mg s plus ZnCl2 aq.
To do this equation, there would have to be an = in it. If you mean 5x-2y=4, then: 5x-2y=4 -5x -5x = -2y=4-5x Hope this helped!