X-9=4*X

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Solution for X-9=4*X equation:


Simplifying
X + -9 = 4X

Reorder the terms:
-9 + X = 4X

Solving
-9 + X = 4X

Solving for variable 'X'.

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

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

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

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

Add '9' to each side of the equation.
-9 + 9 + -3X = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -3X = 0 + 9
-3X = 0 + 9

Combine like terms: 0 + 9 = 9
-3X = 9

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

Simplifying
X = -3

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