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3.8 = (5/12)*x // - (5/12)*x
3.8-((5/12)*x) = 0
(-5/12)*x+3.8 = 0
3.8-5/12*x = 0 // - 3.8
-5/12*x = -3.8 // : -5/12
x = -3.8/(-5/12)
x = 9.11999993
x = 9.11999993
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