x+2+x+1+x+2+x+1=p

Solution for x+2+x+1+x+2+x+1=p equation:

Simplifying
x + 2 + x + 1 + x + 2 + x + 1 = p

Reorder the terms:
2 + 1 + 2 + 1 + x + x + x + x = p

Combine like terms: 2 + 1 = 3
3 + 2 + 1 + x + x + x + x = p

Combine like terms: 3 + 2 = 5
5 + 1 + x + x + x + x = p

Combine like terms: 5 + 1 = 6
6 + x + x + x + x = p

Combine like terms: x + x = 2x
6 + 2x + x + x = p

Combine like terms: 2x + x = 3x
6 + 3x + x = p

Combine like terms: 3x + x = 4x
6 + 4x = p

Solving
6 + 4x = p

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 4x = -6 + p

Combine like terms: 6 + -6 = 0
0 + 4x = -6 + p
4x = -6 + p

Divide each side by '4'.
x = -1.5 + 0.25p

Simplifying
x = -1.5 + 0.25p