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2.5 = (6/3)*x // - (6/3)*x
2.5-((6/3)*x) = 0
2.5-2*x = 0
2.5-2*x = 0 // - 2.5
-2*x = -2.5 // : -2
x = -2.5/(-2)
x = 1.25
x = 1.25
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