(x*100+98)/(x+98) = (x+98)/7+13
(x*100+98)/(x+98) - (x+98)/7 - 13 = 0
7(x*100+98) - (x+98)^2 - 13*7(x+98) = 0
700x + 686 - x^2 - 196x - 9604 - 91x - 8918 = 0
- x^2 + 413x - 17836 = 0
x1=49; x2=364
(x*100+98)/(x+98) = (x+98)/7+13
(x*100+98)/(x+98) - (x+98)/7 - 13 = 0
7(x*100+98) - (x+98)^2 - 13*7(x+98) = 0
700x + 686 - x^2 - 196x - 9604 - 91x - 8918 = 0
- x^2 + 413x - 17836 = 0
x1=49; x2=364