View Compilation Error

0_0_17422973_23750.cpp: In function 'int main()':
0_0_17422973_23750.cpp:28:15: error: redeclaration of 'long double k1'
   long double k1=(c1*b2-c2*b1)/(a1*b2-a2*b1);
               ^
0_0_17422973_23750.cpp:19:15: note: 'long double k1' previously declared here
   long double k1,k2;
               ^