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3*x-(4*(-7/11)) = 6 // - 6
3*x-(4*(-7/11))-6 = 0
3*x+28/11-6 = 0
3*x-38/11 = 0 // + 38/11
3*x = 38/11 // : 3
x = 38/11/3
x = 38/33
x = 38/33
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