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16/9 = (-4*x)/27 // - (-4*x)/27
16/9-((-4*x)/27) = 0
(4/27)*x+16/9 = 0
4/27*x+16/9 = 0 // - 16/9
4/27*x = -16/9 // : 4/27
x = -16/9/4/27
x = -12
x = -12
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