The addition and subtraction operators are + and -, respectively.
Addition: <operand> + <operand>
Subtraction: <operand> - <operand>
The + operator adds two operands, whereas the - operator subtracts them. The operands can be any expression evaluating to an absolute or relocatable expression.
Addition between two relocatable operands is not allowed.
See the following listing for an example of addition and subtraction operators.
$A3216 + $42 ; Addition of two absolute operands (= $A3258) labelB - $10 ; Subtraction with value of `labelB'