x+3+x(-8)+x=55

Solution for x+3+x(-8)+x=55 equation:

Simplifying
x + 3 + x(-8) + x = 55

Reorder the terms for easier multiplication:
x + 3 + -8x + x = 55

Reorder the terms:
3 + x + -8x + x = 55

Combine like terms: x + -8x = -7x
3 + -7x + x = 55

Combine like terms: -7x + x = -6x
3 + -6x = 55

Solving
3 + -6x = 55

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + -6x = 55 + -3

Combine like terms: 3 + -3 = 0
0 + -6x = 55 + -3
-6x = 55 + -3

Combine like terms: 55 + -3 = 52
-6x = 52

Divide each side by '-6'.
x = -8.666666667

Simplifying
x = -8.666666667