6x-12=12x+9(x+7)

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Solution for 6x-12=12x+9(x+7) equation:


Simplifying
6x + -12 = 12x + 9(x + 7)

Reorder the terms:
-12 + 6x = 12x + 9(x + 7)

Reorder the terms:
-12 + 6x = 12x + 9(7 + x)
-12 + 6x = 12x + (7 * 9 + x * 9)
-12 + 6x = 12x + (63 + 9x)

Reorder the terms:
-12 + 6x = 63 + 12x + 9x

Combine like terms: 12x + 9x = 21x
-12 + 6x = 63 + 21x

Solving
-12 + 6x = 63 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
-12 + 6x + -21x = 63 + 21x + -21x

Combine like terms: 6x + -21x = -15x
-12 + -15x = 63 + 21x + -21x

Combine like terms: 21x + -21x = 0
-12 + -15x = 63 + 0
-12 + -15x = 63

Add '12' to each side of the equation.
-12 + 12 + -15x = 63 + 12

Combine like terms: -12 + 12 = 0
0 + -15x = 63 + 12
-15x = 63 + 12

Combine like terms: 63 + 12 = 75
-15x = 75

Divide each side by '-15'.
x = -5

Simplifying
x = -5

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