You will spend no less than $80 on a gift. You have already spent $50 on part of the gift. Let s be the amount of money you will still spend.

Respuesta :

assuming you have to create an equation...
s is what you have to figure out so it is the subject of the rule
s=
you now need to find out what to do with the other side
you are taking 50 FROM 80 so
s=80-50
s=30
your answer is 30