-1=x+2x+8

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Solution for -1=x+2x+8 equation:


Simplifying
-1 = x + 2x + 8

Reorder the terms:
-1 = 8 + x + 2x

Combine like terms: x + 2x = 3x
-1 = 8 + 3x

Solving
-1 = 8 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
-1 + -3x = 8 + 3x + -3x

Combine like terms: 3x + -3x = 0
-1 + -3x = 8 + 0
-1 + -3x = 8

Add '1' to each side of the equation.
-1 + 1 + -3x = 8 + 1

Combine like terms: -1 + 1 = 0
0 + -3x = 8 + 1
-3x = 8 + 1

Combine like terms: 8 + 1 = 9
-3x = 9

Divide each side by '-3'.
x = -3

Simplifying
x = -3

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