x-30=9

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Solution for x-30=9 equation: 


Simplifying
x + -30 = 9

Reorder the terms:
-30 + x = 9

Solving
-30 + x = 9

Solving for variable 'x'.

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

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

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

Combine like terms: 9 + 30 = 39
x = 39

Simplifying
x = 39

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