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10 © 2003 Texas Instruments Incorporated.
Using subtraction
T
and negation
a
keys
•Use T to enter subtraction operations.
•Use a to enter a negative number in an operation, expression, or on
a setup screen.
Note: The TI-73 Explorer™ subtraction and negation symbols appear
slightly different to make them easier to distinguish. The negative
symbol is raised and slightly shorter.
Example: Subtract 10 from 25.
Example: Subtract L10 from 25.
Example: Subtract L5 from 25.
Press Result
2 5 T 1 0
b
Press Result
2 5 T a 1 0
b
Press Result
2 5 T T 5
b
Note: If you use the
subtraction key instead of
the negation key, an error
message will appear. (See
“Error messages” on
page 28.)
Result unch
a
Try another f
Simplificatio
n
complete.
b/c mode.
b/c mode.