-81=-3x+6(6x+3)

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Solution for -81=-3x+6(6x+3) equation:


Simplifying
-81 = -3x + 6(6x + 3)

Reorder the terms:
-81 = -3x + 6(3 + 6x)
-81 = -3x + (3 * 6 + 6x * 6)
-81 = -3x + (18 + 36x)

Reorder the terms:
-81 = 18 + -3x + 36x

Combine like terms: -3x + 36x = 33x
-81 = 18 + 33x

Solving
-81 = 18 + 33x

Solving for variable 'x'.

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

Add '-33x' to each side of the equation.
-81 + -33x = 18 + 33x + -33x

Combine like terms: 33x + -33x = 0
-81 + -33x = 18 + 0
-81 + -33x = 18

Add '81' to each side of the equation.
-81 + 81 + -33x = 18 + 81

Combine like terms: -81 + 81 = 0
0 + -33x = 18 + 81
-33x = 18 + 81

Combine like terms: 18 + 81 = 99
-33x = 99

Divide each side by '-33'.
x = -3

Simplifying
x = -3

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