3x+12+x=8

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Solution for 3x+12+x=8 equation:


Simplifying
3x + 12 + x = 8

Reorder the terms:
12 + 3x + x = 8

Combine like terms: 3x + x = 4x
12 + 4x = 8

Solving
12 + 4x = 8

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 + 4x = 8 + -12

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

Combine like terms: 8 + -12 = -4
4x = -4

Divide each side by '4'.
x = -1

Simplifying
x = -1

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