3n+2+n-1=42

Solution for 3n+2+n-1=42 equation:

Simplifying
3n + 2 + n + -1 = 42

Reorder the terms:
2 + -1 + 3n + n = 42

Combine like terms: 2 + -1 = 1
1 + 3n + n = 42

Combine like terms: 3n + n = 4n
1 + 4n = 42

Solving
1 + 4n = 42

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 + 4n = 42 + -1

Combine like terms: 1 + -1 = 0
0 + 4n = 42 + -1
4n = 42 + -1

Combine like terms: 42 + -1 = 41
4n = 41

Divide each side by '4'.
n = 10.25

Simplifying
n = 10.25