Question

- 1 = 2m - n; solve for n

Answer 1

n= 2m-1 should be the correct answer

Answer 2

n = 2m + 1

Explanation:

`-1=2m-n\\\\-1+n=2m-n+n\\\\-1+n=2m\\\\-1+1=n=2m+1\\\\\boxed{n=2m+1}`

Hope this helps.