What we know: Perimeter=60 Perimeter formula=2l+2w l=2w
This perimeter has the following set up using p=60 and l=2w: perimeter =2(l)+2w 60=2(2w)+2w 60=4w+2w 60=6w
Now that we know how many w's we need to have we can use this information to find which equations have 6 w's and which one does not. Look at the first equation: 2(2w+w)=60 distributive power 4w+2w=60 like terms 6w=60 correct
second equation: w+2w+w+2w=60 6w=60 like terms, correct
third equation: 2w+2x2w=60 multiplication property 2w+4w=60 like terms 6w=60 correct
fourth equation: w+2w=60 like terms 3w=60 not correct
