Question 1197308
h, Hundreds
t, Tens
u, Ones


{{{system(h=t/2,u=t+1,h+t+u=11)}}}


{{{system(h=t/2,u=t+1,highlight_green(t/2+t+t+1=11))}}}


One equation in one variable, for first finding t.

{{{t/2+2t=10}}}

{{{t+4t=20}}}

{{{highlight(t=4)}}}-----------and you can continue to find all the rest and the number.