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3*x+7/2+1 = 8*x+1/3-4 // - 8*x+1/3-4
3*x-(8*x)+7/2-(1/3)+1+4 = 0
3*x-8*x+7/2-1/3+1+4 = 0
49/6-5*x = 0 // - 49/6
-5*x = -49/6 // : -5
x = -49/6/(-5)
x = 49/30
x = 49/30
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