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sattari [20]
2 years ago
13

Which equation has a solution of n = 4?

Mathematics
2 answers:
Klio2033 [76]2 years ago
5 0

Step-by-step explanation:

  1. 7n=28
  2. divide both side by 7
  3. n=28\7
  4. n=4
Allushta [10]2 years ago
4 0

Answer:

D. 7n = 28

Step-by-step explanation:

Let's substitute 4 for n in each equation to check if it the resulting equation is correct:

6+n=24\\ 6+4=24\\ 10\neq 24\rightarrow \text{Incorrect!}

5n=54\\5(4)=54\\20\neq54\rightarrow\text{Incorrect!}

12-n=16\\12-4=16\\8\neq16\rightarrow\text{Incorrect!}

7n=28\\7(4)=28\\28=28\rightarrow\text{Correct!}

Therefore the answer is D

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<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%20-%202.68%20-%203.57%7D%7B%28%20-%2012.5%20%5Ctimes%200.4%29%7D%20" id="TexForm
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