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45*(x+10/15) = 45*((2*x)/3) // - 45*((2*x)/3)
45*(x+10/15)-(45*((2*x)/3)) = 0
45*(x+10/15)-30*x = 0
45*(x+2/3)-30*x = 0
45*(x+2/3)-30*x = 0
15*x+30 = 0
15*x+30 = 0
15*x+30 = 0 // - 30
15*x = -30 // : 15
x = -30/15
x = -2
x = -2
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