$\"\"$

The expression is $\"\"$

$\"\"$ (Replace m with 8 and y with 6 in original expression) $\"\"$

Simplify the expression using order of operations (PEMDAS).

Since there are no grouping symbols and powers, product and quotients,

First operation is inside the parenthesis.

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

$\"\"$ (Add: $\"\"$ )

Next operation is subtraction.

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

The value of the expression is 26.