3x-6+x=42

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Solution for 3x-6+x=42 equation: 


Simplifying
3x + -6 + x = 42

Reorder the terms:
-6 + 3x + x = 42

Combine like terms: 3x + x = 4x
-6 + 4x = 42

Solving
-6 + 4x = 42

Solving for variable 'x'.

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

Add '6' to each side of the equation.
-6 + 6 + 4x = 42 + 6

Combine like terms: -6 + 6 = 0
0 + 4x = 42 + 6
4x = 42 + 6

Combine like terms: 42 + 6 = 48
4x = 48

Divide each side by '4'.
x = 12

Simplifying
x = 12

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