1+(-X)=9

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Solution for 1+(-X)=9 equation: 


Simplifying
1 + (-1X) = 9

Solving
1 + (-1X) = 9

Solving for variable 'X'.

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

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

Combine like terms: 1 + -1 = 0
0 + (-1X) = 9 + -1
(-1X) = 9 + -1

Combine like terms: 9 + -1 = 8
(-1X) = 8

Divide each side by '-1'.
X = -8

Simplifying
X = -8

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