nicktheoreomaster nicktheoreomaster
  • 25-04-2017
  • Mathematics
contestada

Someone please answer this I really need help!
Explain how to use properties to prove d + (8d + 1) + 7 is equivalent to 8 + 9d.

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Аноним Аноним
  • 25-04-2017
I'm not quite sure if this is correct but 

d = 1 
8d +d = 9d 

the you have 1 and 7 + 1 = 8 

hope this helps :)
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fiama113 fiama113
  • 23-10-2019

Answer:

Step-by-step explanation:

Sample Response: Use the associative property to move the parentheses, and the expression becomes (d + 8d) + 1 + 7. Combine like terms, and the expression becomes 9d +8. Use the commutative property to change the order of the terms, and the expression becomes 8 + 9d.

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