3x+x-2=12

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Solution for 3x+x-2=12 equation:


Simplifying
3x + x + -2 = 12

Reorder the terms:
-2 + 3x + x = 12

Combine like terms: 3x + x = 4x
-2 + 4x = 12

Solving
-2 + 4x = 12

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 4x = 12 + 2

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

Combine like terms: 12 + 2 = 14
4x = 14

Divide each side by '4'.
x = 3.5

Simplifying
x = 3.5

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