2n-(n-1)=3

Solution for 2n-(n-1)=3 equation:

Simplifying
2n + -1(n + -1) = 3

Reorder the terms:
2n + -1(-1 + n) = 3
2n + (-1 * -1 + n * -1) = 3
2n + (1 + -1n) = 3

Reorder the terms:
1 + 2n + -1n = 3

Combine like terms: 2n + -1n = 1n
1 + 1n = 3

Solving
1 + 1n = 3

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + 1n = 3 + -1

Combine like terms: 1 + -1 = 0
0 + 1n = 3 + -1
1n = 3 + -1

Combine like terms: 3 + -1 = 2
1n = 2

Divide each side by '1'.
n = 2

Simplifying
n = 2