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5*x+6/3 = 30-(x/2) // - 30-(x/2)
5*x+x/2+6/3-30 = 0
11/2*x-28 = 0 // + 28
11/2*x = 28 // : 11/2
x = 28/11/2
x = 56/11
x = 56/11
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