s-1+s+12=s+42

Solution for s-1+s+12=s+42 equation:

Simplifying
s + -1 + s + 12 = s + 42

Reorder the terms:
-1 + 12 + s + s = s + 42

Combine like terms: -1 + 12 = 11
11 + s + s = s + 42

Combine like terms: s + s = 2s
11 + 2s = s + 42

Reorder the terms:
11 + 2s = 42 + s

Solving
11 + 2s = 42 + s

Solving for variable 's'.

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

Add '-1s' to each side of the equation.
11 + 2s + -1s = 42 + s + -1s

Combine like terms: 2s + -1s = 1s
11 + 1s = 42 + s + -1s

Combine like terms: s + -1s = 0
11 + 1s = 42 + 0
11 + 1s = 42

Add '-11' to each side of the equation.
11 + -11 + 1s = 42 + -11

Combine like terms: 11 + -11 = 0
0 + 1s = 42 + -11
1s = 42 + -11

Combine like terms: 42 + -11 = 31
1s = 31

Divide each side by '1'.
s = 31

Simplifying
s = 31