Answer :

Answer:

n=7

Step-by-step explanation:

(5n + 7) + n = 2(2n + 1) + 3n -2

(5n + 7) + n = 4n+2+ 3n -2

(5n + 7) + n = 7n

6n + 7 = 7n

7=n or

n=7

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