9+x-3x=3

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


Simplifying
9 + x + -3x = 3

Combine like terms: x + -3x = -2x
9 + -2x = 3

Solving
9 + -2x = 3

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + -2x = 3 + -9

Combine like terms: 9 + -9 = 0
0 + -2x = 3 + -9
-2x = 3 + -9

Combine like terms: 3 + -9 = -6
-2x = -6

Divide each side by '-2'.
x = 3

Simplifying
x = 3

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