x+4(-x)=9

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Solution for x+4(-x)=9 equation: 


Simplifying
x + 4(-1x) = 9

Remove parenthesis around (-1x)
x + 4 * -1x = 9

Multiply 4 * -1
x + -4x = 9

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

Solving
-3x = 9

Solving for variable 'x'.

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

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

Simplifying
x = -3

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