9-9x=129-30x

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Solution for 9-9x=129-30x equation:


Simplifying
9 + -9x = 129 + -30x

Solving
9 + -9x = 129 + -30x

Solving for variable 'x'.

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

Add '30x' to each side of the equation.
9 + -9x + 30x = 129 + -30x + 30x

Combine like terms: -9x + 30x = 21x
9 + 21x = 129 + -30x + 30x

Combine like terms: -30x + 30x = 0
9 + 21x = 129 + 0
9 + 21x = 129

Add '-9' to each side of the equation.
9 + -9 + 21x = 129 + -9

Combine like terms: 9 + -9 = 0
0 + 21x = 129 + -9
21x = 129 + -9

Combine like terms: 129 + -9 = 120
21x = 120

Divide each side by '21'.
x = 5.714285714

Simplifying
x = 5.714285714

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