4x-x+1+9=12

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Solution for 4x-x+1+9=12 equation:


Simplifying
4x + -1x + 1 + 9 = 12

Reorder the terms:
1 + 9 + 4x + -1x = 12

Combine like terms: 1 + 9 = 10
10 + 4x + -1x = 12

Combine like terms: 4x + -1x = 3x
10 + 3x = 12

Solving
10 + 3x = 12

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + 3x = 12 + -10

Combine like terms: 10 + -10 = 0
0 + 3x = 12 + -10
3x = 12 + -10

Combine like terms: 12 + -10 = 2
3x = 2

Divide each side by '3'.
x = 0.6666666667

Simplifying
x = 0.6666666667

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