BIue
  • BIue
What is 7(n+4) = 21 equal to?
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
geerky42
  • geerky42
Solve for n? Divide both sides by 7, then subtract both sides by 4.
BIue
  • BIue
7(n+4) = 21 Choices. n = -1 n = 7 n = 10 n = 1 Im having trouble :/
BIue
  • BIue
@geerky42

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

geerky42
  • geerky42
You want to isolate n. So first you need to "remove" 7. w can do that by divide it by 7, but we must do that to 21 too. \[7(n+4)=21\quad\Longrightarrow\quad\dfrac{7(n+4)}7=\dfrac{21}7\]
geerky42
  • geerky42
Then we are left with \(n+4 = 3\).
BIue
  • BIue
Ok.
BIue
  • BIue
So n = 7? Im not really good with mathematics sorry.
geerky42
  • geerky42
n is still not isolated, so we need to remove 4. Opposite of adding 4 is subtracting 4. So we subtract \(n+4\) by 4, do the same to 3. \[n+4=3\quad\Longrightarrow\quad n+4-4=3-4\] \[\boxed{n=-1}\]
BIue
  • BIue
Thank you.

Looking for something else?

Not the answer you are looking for? Search for more explanations.