-81=-3(4x-5)

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Solution for -81=-3(4x-5) equation:


Simplifying
-81 = -3(4x + -5)

Reorder the terms:
-81 = -3(-5 + 4x)
-81 = (-5 * -3 + 4x * -3)
-81 = (15 + -12x)

Solving
-81 = 15 + -12x

Solving for variable 'x'.

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

Add '12x' to each side of the equation.
-81 + 12x = 15 + -12x + 12x

Combine like terms: -12x + 12x = 0
-81 + 12x = 15 + 0
-81 + 12x = 15

Add '81' to each side of the equation.
-81 + 81 + 12x = 15 + 81

Combine like terms: -81 + 81 = 0
0 + 12x = 15 + 81
12x = 15 + 81

Combine like terms: 15 + 81 = 96
12x = 96

Divide each side by '12'.
x = 8

Simplifying
x = 8

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