20-9X=-X

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Solution for 20-9X=-X equation:


Simplifying
20 + -9X = -1X

Solving
20 + -9X = -1X

Solving for variable 'X'.

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

Add 'X' to each side of the equation.
20 + -9X + X = -1X + X

Combine like terms: -9X + X = -8X
20 + -8X = -1X + X

Combine like terms: -1X + X = 0
20 + -8X = 0

Add '-20' to each side of the equation.
20 + -20 + -8X = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -8X = 0 + -20
-8X = 0 + -20

Combine like terms: 0 + -20 = -20
-8X = -20

Divide each side by '-8'.
X = 2.5

Simplifying
X = 2.5

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