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262.5 = (7/5)*x // - (7/5)*x
262.5-((7/5)*x) = 0
(-7/5)*x+262.5 = 0
262.5-7/5*x = 0 // - 262.5
-7/5*x = -262.5 // : -7/5
x = -262.5/(-7/5)
x = 187.5
x = 187.5
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