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4*x+5/7+4/7 = (-2*x)/3 // - (-2*x)/3
4*x-((-2*x)/3)+5/7+4/7 = 0
4*x+(2/3)*x+5/7+4/7 = 0
14/3*x+9/7 = 0 // - 9/7
14/3*x = -9/7 // : 14/3
x = -9/7/14/3
x = -27/98
x = -27/98
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