yestarday isabel exercised 15 minutes longer than she exercised today. yesterday she exercised for 40 minutes. which equation can be used to find m the number of minutes Isabel exercised today?
Let's use variables: Y=amount of time Isabel exercised yesterday T=amount of time Isabel exercised today We know that: L=40 and that L=T+15 Substituting we can say that: 40=T+15 Then, subtracting 15 from both sides: 40(-15)=T+15(-15) T=25
