Solve the following linear equation:

To solve the linear equation, we need to remove the brackets first.

Now, 2 multiply by 4n gives +8n.

Next, 2 multiply by -1 gives -2.

Now, the equation becomes:

With the equation as:

Notice that we can remove 5n by adding -5n to both sides of the equation. Now the equation becomes:

On the Right Hand Side (RHS), 5n and -5n cancel off. We now have:

Now, with the equation as:

Notice that we can remove -2 by adding +2 to both sides of the equation. Now the equation becomes:

On the Left Hand Side (LHS), -2 and +2 cancel off. We now have:

Now, adding 8n with -5n gives 3n. Similarly, adding 7 with 2. gives 9.

The equation becomes 3n = 9.

Now, we can get n by dividing both sides by 3. The equation becomes:

Notice that, in the term 3n/3, we can cancel of 3. The equation becomes n = 9/3.

Now, we divide 9 with 3. We get n = 3. Clearly, the answer is B.

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