X-9=(-30)

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Solution for X-9=(-30) equation: 


Simplifying
X + -9 = (-30)

Reorder the terms:
-9 + X = (-30)
-9 + X = -30

Solving
-9 + X = -30

Solving for variable 'X'.

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

Add '9' to each side of the equation.
-9 + 9 + X = -30 + 9

Combine like terms: -9 + 9 = 0
0 + X = -30 + 9
X = -30 + 9

Combine like terms: -30 + 9 = -21
X = -21

Simplifying
X = -21

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