2x+8+x+4=

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Solution for 2x+8+x+4= equation:


Simplifying
2x + 8 + x + 4 = 0

Reorder the terms:
8 + 4 + 2x + x = 0

Combine like terms: 8 + 4 = 12
12 + 2x + x = 0

Combine like terms: 2x + x = 3x
12 + 3x = 0

Solving
12 + 3x = 0

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 3x = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 3x = 0 + -12
3x = 0 + -12

Combine like terms: 0 + -12 = -12
3x = -12

Divide each side by '3'.
x = -4

Simplifying
x = -4

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