Answer:
4
Explanation:
6n - n = 5n
13 + 7 = 20
5n = 20
20/5 = 4
n = 4
To solve this, we first have to get the n's on one side:
↓ add 7 to both sides
↓ subtract n from both sides
Then, we can divide by 5 on both sides to solve for n.
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