Question 1010181
h, t, u for Hundred, Tens, Ones or Units.
Original Number,  100h+10t+u.


{{{system(h+t+u=9,t=3h,100u+10t+h=-99+100h+10t+u)}}}


{{{system(h+t+u=9,t=3h,99u-99h=-99)}}}


{{{system(h+t+u=9,t=3h,99h-99u=99)}}}


{{{system(h+3h+u=9,h-u=1)}}}
Finish this.