9[1-(-2x-6)]=126x+387

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Solution for 9[1-(-2x-6)]=126x+387 equation:


Simplifying
9[1 + -1(-2x + -6)] = 126x + 387

Reorder the terms:
9[1 + -1(-6 + -2x)] = 126x + 387
9[1 + (-6 * -1 + -2x * -1)] = 126x + 387
9[1 + (6 + 2x)] = 126x + 387

Combine like terms: 1 + 6 = 7
9[7 + 2x] = 126x + 387
[7 * 9 + 2x * 9] = 126x + 387
[63 + 18x] = 126x + 387

Reorder the terms:
63 + 18x = 387 + 126x

Solving
63 + 18x = 387 + 126x

Solving for variable 'x'.

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

Add '-126x' to each side of the equation.
63 + 18x + -126x = 387 + 126x + -126x

Combine like terms: 18x + -126x = -108x
63 + -108x = 387 + 126x + -126x

Combine like terms: 126x + -126x = 0
63 + -108x = 387 + 0
63 + -108x = 387

Add '-63' to each side of the equation.
63 + -63 + -108x = 387 + -63

Combine like terms: 63 + -63 = 0
0 + -108x = 387 + -63
-108x = 387 + -63

Combine like terms: 387 + -63 = 324
-108x = 324

Divide each side by '-108'.
x = -3

Simplifying
x = -3

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