9=5x+4(-4x)

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Solution for 9=5x+4(-4x) equation:


Simplifying
9 = 5x + 4(-4x)

Remove parenthesis around (-4x)
9 = 5x + 4 * -4x

Multiply 4 * -4
9 = 5x + -16x

Combine like terms: 5x + -16x = -11x
9 = -11x

Solving
9 = -11x

Solving for variable 'x'.

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

Add '11x' to each side of the equation.
9 + 11x = -11x + 11x

Combine like terms: -11x + 11x = 0
9 + 11x = 0

Add '-9' to each side of the equation.
9 + -9 + 11x = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 11x = 0 + -9
11x = 0 + -9

Combine like terms: 0 + -9 = -9
11x = -9

Divide each side by '11'.
x = -0.8181818182

Simplifying
x = -0.8181818182

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