x=12432.48 + x/1.17*0.17-80-(x/1.17*0.17)*0.03
x - x/1.17*0.17 + (x/1.17*0.17)*0.03 =12432.48 - 80
[1 - 1/1.17*0.17 + 1/1.17*0.17*0.03] x =12352.48
x=14363.35