the variety within the Screen is subtracted with the quantity from the calculator memory. To recall the range while in the calculator memory strike mr what's an expression? exactly what is an operand? what on earth is an operator? I get a long solution. how can I spherical it to the closest integ

the number over the Screen is subtracted from the amount inside the calculator memory. To remember the selection in the calculator memory strike mr exactly what is an expression? What is an operand? precisely what is an operator? I receive a extensive remedy. How do I round it to the closest inte