8 post 4ft is the length 2ft ,yes if you dived 5 from 40 that is how many post , then you dived how many posts and that is the height then you dvide that and that is your width.
Your answer is <u>12v-3.</u>
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Steps:
1. Group Like Terms. (8v-3v+7v-3)
2. Add Similar Elements. (8v-3v+7v=12v)
3. Finished. (=12v-3)
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Hope this helped :)
