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xz_007 [3.2K]
3 years ago
4

Please explain this 7n-3=4n+12

Mathematics
2 answers:
Stells [14]3 years ago
8 0

Answer: n=5

Step-by-step explanation:

  1. 7n-3=4n+12
  2. 7n-4n=3n
  3. 12+3=15
  4. 3n=15
  5. n=5
Montano1993 [528]3 years ago
6 0

Hey there!

\large\boxed{n=5}

First, let's add 3 to each side of the equation to eliminate the -3 on the left side. We now have:

7n = 4n + 15

Now, let's subtract 4n from each side of the equation to eliminate the 4n on the right side. We now have:

3n = 15

Last, we can divide both sides of the equation to get rid of the 3 in front of the n. Our final answer is:

n = 5

Let's check the answer by replacing n with 5 in the equation.

7(5) - 3 = 4(5) + 12

Multiply.

35 - 3 = 20 + 12

Add or subtract.

32 = 32

That checks out, so

\large\boxed{n=5}

Hope this helps!

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