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19-((5/2)*x) = 37 // - 37
19-((5/2)*x)-37 = 0
(-5/2)*x-37+19 = 0
-5/2*x-18 = 0 // + 18
-5/2*x = 18 // : -5/2
x = 18/(-5/2)
x = -36/5
x = -36/5
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