The - Command

Command Summary

Returns the difference between two numbers.

Command Syntax

value1 - value2

Menu Location

Press [-]

Calculator Compatibility

TI-83/84/+/SE

Token Size

1 byte

The - (subtract) operator takes two numbers, variables, or expressions and subtracts one from the other, thus returning the difference between them. The - operator appears lower in the order of operations than both * and /, so if those appear in an expression, they will be executed first. In addition, the + operator has the same order of operations as -, so the calculator simply executes them left to right in the order that they appear.

:1-1
           0

:5→X
:2-3X
           -13

:2→A:3→B
:A/B-B/A
           -.8333333333

Error Conditions

• ERR:SYNTAX is thrown if you try to use - (subtract) in place of ‾ (negative). Because they look very similar, it's easy to get this error; at the same time, it's an easy error to fix.

Related Commands

• + (add)
• * (multiply)
• / (divide)

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