Answer:
Yes they are equivalent, both equations equals [tex]15d+20[/tex]
Step-by-step explanation:
We first simplify Olivia's equation
[tex]6d + 8 + 9d + 12[/tex]
1. we combine like terms in the equation: [tex]6d + 8 + 9d + 12[/tex]
[tex]6d+9d[/tex]
[tex]8+12[/tex]
[tex]15d+20[/tex]
Now we simplify Isabella's
[tex]5(3d + 4)[/tex]
1. we do distributive property
[tex]5*3d[/tex]
[tex]5*4[/tex]
[tex]15d+20[/tex]
If you have any quesitons feel free to ask