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x in (-oo:+oo)
x/500 = 14/75 // - 14/75
x/500-(14/75) = 0
x/500-14/75 = 0
1/500*x-14/75 = 0 // + 14/75
1/500*x = 14/75 // : 1/500
x = 14/75/1/500
x = 280/3
x = 280/3
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