What are all tuples off postive integers w,x,y,z that fullfill following system of equations:
$$ x + 10z^2 = 2014 $$ $$ 2y + z = 54$$ $$ (y+2x + \frac{7}{2}w)z=1211$$
I am really lost - all my attemps lead into disaster..
What are all tuples off postive integers w,x,y,z that fullfill following system of equations:
$$ x + 10z^2 = 2014 $$ $$ 2y + z = 54$$ $$ (y+2x + \frac{7}{2}w)z=1211$$
I am really lost - all my attemps lead into disaster..
One approach is to use basic detective work. From the second equation, $z$ is even. Now look at the first equation $x+10z^2=2014$. Since $z$ is even and positive, there are not many possibilities for $z$. For already at $z=20$ we have $10z^2$ is quite a bit bigger than $2014$.
So there are not many cases to check. A bit grungy, but you will soon arrive at the solution.
By the way, $1211=(7)(173)$. If you think about this, you will arrive at the answer in one step.