I have no idea what to do about this question:
Are there integers like $x$, $y$ and $z$ that
$$6x+9y+15z=107$$
I have no idea what to do about this question:
Are there integers like $x$, $y$ and $z$ that
$$6x+9y+15z=107$$
Since $3 \mid 6$ and $3 \mid 9$ and $3\mid 15$, $3$ should divide the right hand side but $ 3\nmid 107$. Hence there do not exist such integers $x$, $y$ and $z$ .