54=3[2-4x]

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Solution for 54=3[2-4x] equation:


Simplifying
54 = 3[2 + -4x]
54 = [2 * 3 + -4x * 3]
54 = [6 + -12x]

Solving
54 = 6 + -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.
54 + 12x = 6 + -12x + 12x

Combine like terms: -12x + 12x = 0
54 + 12x = 6 + 0
54 + 12x = 6

Add '-54' to each side of the equation.
54 + -54 + 12x = 6 + -54

Combine like terms: 54 + -54 = 0
0 + 12x = 6 + -54
12x = 6 + -54

Combine like terms: 6 + -54 = -48
12x = -48

Divide each side by '12'.
x = -4

Simplifying
x = -4

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