Answer:
The error comes in line number 2).
Step-by-step explanation:
The solution of the equation progresses as follows:
1) 4(12n-6) = 6(-4 + 5n)
2) 48n - 24 = -24 + 30n + 18n
3) 48n - 24 = -24 + 48n
4) 48n - 24 = 48n - 24
5) 48n = 48n
6) n =0
The error comes in line number 2) when the brackets were expanded.
The extra +18 should not exist.
The correct progression of the solution should be:
1) 4(12n - 6) = 6(-4 + 5n)
2) 48n - 24 = 30n - 24
3) 48n - 30n = -24 + 24
4) 18n = 0
5) n = 0 / 18
6) n = 0
This is the correct solution.
