In marketing transactions, the fact that customers who buy product x also buy product y creates a opportunity. that is, "if they're buying x, sell them y" or "if they're buying y, sell them x."

Need solving this second acceleration problem.

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?