81=-6x-3(6x+13)

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Solution for 81=-6x-3(6x+13) equation:


Simplifying
81 = -6x + -3(6x + 13)

Reorder the terms:
81 = -6x + -3(13 + 6x)
81 = -6x + (13 * -3 + 6x * -3)
81 = -6x + (-39 + -18x)

Reorder the terms:
81 = -39 + -6x + -18x

Combine like terms: -6x + -18x = -24x
81 = -39 + -24x

Solving
81 = -39 + -24x

Solving for variable 'x'.

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

Add '24x' to each side of the equation.
81 + 24x = -39 + -24x + 24x

Combine like terms: -24x + 24x = 0
81 + 24x = -39 + 0
81 + 24x = -39

Add '-81' to each side of the equation.
81 + -81 + 24x = -39 + -81

Combine like terms: 81 + -81 = 0
0 + 24x = -39 + -81
24x = -39 + -81

Combine like terms: -39 + -81 = -120
24x = -120

Divide each side by '24'.
x = -5

Simplifying
x = -5

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