684•397-584•397

To solve the expression 684 • 397 - 584 • 397, we follow the order of operations, which is parentheses, exponents, multiplication/division (from left to right), and addition/subtraction (from left to right).

First, we perform the multiplication:

684 • 397 = 271,548 584 • 397 = 231,848

Next, we subtract the second multiplication from the first:

271,548 - 231,848 = 39,700

Therefore, 684 • 397 - 584 • 397 equals 39,700.