Algebra Homework Help!!

Question

So I am having trouble solving this question: 3(2n-7) + 12 = 39

So first i tried using the way i was taught in school:

3(2n-7)+12=29

6n + -21 + 12 = 39

+ 21 +21

6n + 33 = 39

-33 -33

6n/6 = 6/6

so n equals 1

but then i went to math papa to look over my answer and it gave me a whole different way of doing it and said the answer is n=8

Which one is correct?

xx ty

Answer 1

3(2n-7) +12 = 29

6n -21 +12 = 29

6n = 29-12+21 = 38

n=38/6= 19/3 = 6 1/6

check the answer, plug it into the original equation

3(2(19/3 -7) +12 = 38-21 +12 = 29