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(4/9)*(x+3) = g // - g
(4/9)*(x+3)-g = 0
4/9*(x+3)-g = 0
4/9*(x+3)-g = 0
4/9*x-g+4/3 = 0
4/9*x-g+4/3 = 0
4/9*x-g+4/3 = 0 // - 4/3-g
4/9*x = -(4/3-g) // : 4/9
x = (-(4/3-g))/4/9
x = 9/4*(g-4/3)
x = 9/4*(g-4/3)
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