#include <stdio.h>
typedef struct {
    double x;
    double y;
} Pair;

Pair rain(int A[2][3]) {
    double x=((A[1][1]*A[0][2])-(A[0][1]*A[1][2]))/((A[1][1]*A[0][0])-(A[0][1]*A[1][0]));
    double y = (A[0][2] - A[0][0]*x) / A[0][1];
    Pair p = {x, y};
    return p;
}
int main() {
    int v[2][3] = {{1,1,3},{1,-1,1}};
    printf("%f,%f!\n",rain(v).x,rain(v).y);
    int w[2][3] = {{9,5,9},{5,9,5}};
    printf("%f,%f!\n",rain(w).x,rain(w).y);
    return 0;
}