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(5*x)/2-3 = 2*x-(7/9) // - 2*x-(7/9)
(5*x)/2-(2*x)+7/9-3 = 0
(5*x)/2-2*x+7/9-3 = 0
1/2*x-20/9 = 0 // + 20/9
1/2*x = 20/9 // : 1/2
x = 20/9/1/2
x = 40/9
x = 40/9
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