\(\boxed{\text{450.}\text{\ }\text{ОК\ ГДЗ\ -\ домашка\ на\ 5}}\)
\[ax + by > c\]
\[\textbf{а)}\ a = 0;\ \ b = 1;\ \ c = 3:\]
\[y > 3\]
\[\textbf{б)}\ a = 1;\ \ b = 0;\ \ c = 3:\]
\[x > 3\]