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Neuron
If you would like to simplify 4 * (n + 5), you can do this using the following step:

4 * (n + 5) = 4 * n + 4 * 5 = 4 * n + 20

The correct result is 4 * n + 20.
bellbell252
4(n+5) is actually in its most simplified form. It can be rewritten as 4n+20, but 4(n+5) is more simplified.