9=9(x-4)

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


Simplifying
9 = 9(x + -4)

Reorder the terms:
9 = 9(-4 + x)
9 = (-4 * 9 + x * 9)
9 = (-36 + 9x)

Solving
9 = -36 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
9 + -9x = -36 + 9x + -9x

Combine like terms: 9x + -9x = 0
9 + -9x = -36 + 0
9 + -9x = -36

Add '-9' to each side of the equation.
9 + -9 + -9x = -36 + -9

Combine like terms: 9 + -9 = 0
0 + -9x = -36 + -9
-9x = -36 + -9

Combine like terms: -36 + -9 = -45
-9x = -45

Divide each side by '-9'.
x = 5

Simplifying
x = 5

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