x+3x+3=9

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Solution for x+3x+3=9 equation: 


Simplifying
x + 3x + 3 = 9

Reorder the terms:
3 + x + 3x = 9

Combine like terms: x + 3x = 4x
3 + 4x = 9

Solving
3 + 4x = 9

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 4x = 9 + -3

Combine like terms: 3 + -3 = 0
0 + 4x = 9 + -3
4x = 9 + -3

Combine like terms: 9 + -3 = 6
4x = 6

Divide each side by '4'.
x = 1.5

Simplifying
x = 1.5

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