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336 = (16*x)/3 // - (16*x)/3
336-((16*x)/3) = 0
(-16/3)*x+336 = 0
336-16/3*x = 0 // - 336
-16/3*x = -336 // : -16/3
x = -336/(-16/3)
x = 63
x = 63
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