2x-6+21=-3

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Solution for 2x-6+21=-3 equation: 


Simplifying
2x + -6 + 21 = -3

Reorder the terms:
-6 + 21 + 2x = -3

Combine like terms: -6 + 21 = 15
15 + 2x = -3

Solving
15 + 2x = -3

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + 2x = -3 + -15

Combine like terms: 15 + -15 = 0
0 + 2x = -3 + -15
2x = -3 + -15

Combine like terms: -3 + -15 = -18
2x = -18

Divide each side by '2'.
x = -9

Simplifying
x = -9

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