How is velocity and speed found in an equation?

We'd look for one or the other, not both, depending upon the problem statement.

Note that velocity is a vector quantity; it has both magnitude and direction, such as "5 mph NORTH"

Speed, on the other hand, is a scalar quantity (no direction included).

If you could post an example problem or two, I could comment further.

Note that speed is commonly expressed in miles per hour.  If you drive 52 miles in 1.5 hours, your average speed was (52 miles) / (1.5 hours) (which can be simplified and which should have the units of measurement  (miles/hr).

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