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(2/3)*x+7/9 = 55/9-2*x // - 55/9-2*x
(2/3)*x-(-2*x)+7/9-(55/9) = 0
(2/3)*x+2*x+7/9-55/9 = 0
8/3*x-16/3 = 0 // + 16/3
8/3*x = 16/3 // : 8/3
x = 16/3/8/3
x = 2
x = 2
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