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(3/5)*x = 1200000 // - 1200000
(3/5)*x-1200000 = 0
3/5*x-1200000 = 0 // + 1200000
3/5*x = 1200000 // : 3/5
x = 1200000/3/5
x = 2000000
x = 2000000
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