-81=-9(4x+1)

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Solution for -81=-9(4x+1) equation:


Simplifying
-81 = -9(4x + 1)

Reorder the terms:
-81 = -9(1 + 4x)
-81 = (1 * -9 + 4x * -9)
-81 = (-9 + -36x)

Solving
-81 = -9 + -36x

Solving for variable 'x'.

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

Add '36x' to each side of the equation.
-81 + 36x = -9 + -36x + 36x

Combine like terms: -36x + 36x = 0
-81 + 36x = -9 + 0
-81 + 36x = -9

Add '81' to each side of the equation.
-81 + 81 + 36x = -9 + 81

Combine like terms: -81 + 81 = 0
0 + 36x = -9 + 81
36x = -9 + 81

Combine like terms: -9 + 81 = 72
36x = 72

Divide each side by '36'.
x = 2

Simplifying
x = 2

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