6x+30=-21x+21+9x

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Solution for 6x+30=-21x+21+9x equation:


Simplifying
6x + 30 = -21x + 21 + 9x

Reorder the terms:
30 + 6x = -21x + 21 + 9x

Reorder the terms:
30 + 6x = 21 + -21x + 9x

Combine like terms: -21x + 9x = -12x
30 + 6x = 21 + -12x

Solving
30 + 6x = 21 + -12x

Solving for variable 'x'.

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

Add '12x' to each side of the equation.
30 + 6x + 12x = 21 + -12x + 12x

Combine like terms: 6x + 12x = 18x
30 + 18x = 21 + -12x + 12x

Combine like terms: -12x + 12x = 0
30 + 18x = 21 + 0
30 + 18x = 21

Add '-30' to each side of the equation.
30 + -30 + 18x = 21 + -30

Combine like terms: 30 + -30 = 0
0 + 18x = 21 + -30
18x = 21 + -30

Combine like terms: 21 + -30 = -9
18x = -9

Divide each side by '18'.
x = -0.5

Simplifying
x = -0.5

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