Question 1141757
A first number [x] plus [+] twice a second number [2y] is [=] 11. 
<pre>
x + 2y = 11
</pre>
Twice the first number [2x] plus [+] the second [y] totals [=] 31.
<pre>
2x + y = 31

So the system of two equations with 2 unknowns is

{{{system(x+2y=11,3x+y=31)}}}
</pre> Find the numbers.<pre>
Solve that system by substitution or elimination.  If you have trouble, ask me
for help in the space below and I'll get back to you be email.

Edwin</pre>