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(4/5)*x+6 = 368/45-2*x // - 368/45-2*x
(4/5)*x-(-2*x)-(368/45)+6 = 0
(4/5)*x+2*x-368/45+6 = 0
14/5*x-98/45 = 0 // + 98/45
14/5*x = 98/45 // : 14/5
x = 98/45/14/5
x = 7/9
x = 7/9
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