Savannah has $5 in her wallet. she owes her brother $20 and owes her sister $18. she earned $25 babysitting. write an algebraic expression that represents savannah’s financial situation.

savannah has $5 in her wallet. she owes her brother $20 and owes her sister $18. she earned $25 babysitting. how much money does savannah have? you must show your work to receive credit.