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1/3-((4/5)*x) = 15*x+30 // - 15*x+30
1/3-((4/5)*x)-(15*x)-30 = 0
(-4/5)*x-15*x+1/3-30 = 0
-79/5*x-89/3 = 0 // + 89/3
-79/5*x = 89/3 // : -79/5
x = 89/3/(-79/5)
x = -445/237
x = -445/237
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