-81=3(-6-3x)

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


Simplifying
-81 = 3(-6 + -3x)
-81 = (-6 * 3 + -3x * 3)
-81 = (-18 + -9x)

Solving
-81 = -18 + -9x

Solving for variable 'x'.

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

Add '9x' to each side of the equation.
-81 + 9x = -18 + -9x + 9x

Combine like terms: -9x + 9x = 0
-81 + 9x = -18 + 0
-81 + 9x = -18

Add '81' to each side of the equation.
-81 + 81 + 9x = -18 + 81

Combine like terms: -81 + 81 = 0
0 + 9x = -18 + 81
9x = -18 + 81

Combine like terms: -18 + 81 = 63
9x = 63

Divide each side by '9'.
x = 7

Simplifying
x = 7

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