Casio fx-83GT - Inequalities on a Number Line (Part 3) Double Ended

Example
Draw
Inequalities on a
number line
Press again on confirm.
If more lines are needed
add them in slot B and C.
If no more lines are
needed, scroll down to
execute.
Choose
Type in 2 and press
All double ended inequalities work the same way.
Type in 4 and press
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