Algebraic expression
The signs
<
>
indicate if a number is less or higher than the other (they are not equal).
The signs
≤
≥
indicate if a number is less or higher or equal than the other
In this case, we are using the signs < or >. The tip of the sign points to the smaller number. Then
< means "less than"
Therefore, 30 less than t is equal to
30 < t
because 30 is smaller than t