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x in (-oo:+oo)
(2/3)*x = 1290000 // - 1290000
(2/3)*x-1290000 = 0
2/3*x-1290000 = 0 // + 1290000
2/3*x = 1290000 // : 2/3
x = 1290000/2/3
x = 1935000
x = 1935000
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