2x+9+12=

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Solution for 2x+9+12= equation:


Simplifying
2x + 9 + 12 = 0

Reorder the terms:
9 + 12 + 2x = 0

Combine like terms: 9 + 12 = 21
21 + 2x = 0

Solving
21 + 2x = 0

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 2x = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 2x = 0 + -21
2x = 0 + -21

Combine like terms: 0 + -21 = -21
2x = -21

Divide each side by '2'.
x = -10.5

Simplifying
x = -10.5

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