Determine whether each equation is an identity or whether it has no solution.1 2(a-4)=4a-(2a+4) 2. 5y+2= 1/2 (10y+4) 3. K-3k=6k+5-8k 4. 2(2k-1) =4(k-2) 5. -6a+3=-3(2a-1) 6. 4-d=-(d-4)