$\"\"$

The expression is $\"\"$ \ \

$\"\"$ (Substitute a = 5, b = 12 and c = 4)

$\"\"$ (Rewrite the expression as division problem) $\"\"$

By the order of operations (PEMDAS):

First evaluate the expression within the parenthesis.

$\"\"$ (Subtract: $\"\"$ ) $\"\"$

Next operation is multiplication.

$\"\"$ (Multiply: $\"\"$ )

$\"\"$

Next operation is subtraction.

$\"\"$ (Subtract: $\"\"$ ) $\"\"$

The value of the expression is 17.