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(2*x-4)/100 = 4900 // - 4900
(2*x-4)/100-4900 = 0
(2*x-4)/100+(-4900*100)/100 = 0
2*x-4900*100-4 = 0
2*x-490004 = 0
(2*x-490004)/100 = 0
(2*x-490004)/100 = 0 // * 100
2*x-490004 = 0
2*x-490004 = 0 // + 490004
2*x = 490004 // : 2
x = 490004/2
x = 245002
x = 245002
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