Question 602316
good start


a + b + c = 5  (J)


4a + 2b + c = 12  (K)


16a + 4b + c = 44  (L)


subtracting J from K ___ 3a + b = 7  (M)


subtracting J from L ___ 15a + 3b = 39 ___ dividing by 3 ___ 5a + b = 13 (N)


subtracting M from N ___ 2a = 6


solve for a, then substitute back to find b and c