-3+2(6+x)=-21-8x

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Solution for -3+2(6+x)=-21-8x equation: 


Simplifying
-3 + 2(6 + x) = -21 + -8x
-3 + (6 * 2 + x * 2) = -21 + -8x
-3 + (12 + 2x) = -21 + -8x

Combine like terms: -3 + 12 = 9
9 + 2x = -21 + -8x

Solving
9 + 2x = -21 + -8x

Solving for variable 'x'.

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

Add '8x' to each side of the equation.
9 + 2x + 8x = -21 + -8x + 8x

Combine like terms: 2x + 8x = 10x
9 + 10x = -21 + -8x + 8x

Combine like terms: -8x + 8x = 0
9 + 10x = -21 + 0
9 + 10x = -21

Add '-9' to each side of the equation.
9 + -9 + 10x = -21 + -9

Combine like terms: 9 + -9 = 0
0 + 10x = -21 + -9
10x = -21 + -9

Combine like terms: -21 + -9 = -30
10x = -30

Divide each side by '10'.
x = -3

Simplifying
x = -3

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