4x+12=3[3x-1]

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Solution for 4x+12=3[3x-1] equation:


Simplifying
4x + 12 = 3[3x + -1]

Reorder the terms:
12 + 4x = 3[3x + -1]

Reorder the terms:
12 + 4x = 3[-1 + 3x]
12 + 4x = [-1 * 3 + 3x * 3]
12 + 4x = [-3 + 9x]

Solving
12 + 4x = -3 + 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.
12 + 4x + -9x = -3 + 9x + -9x

Combine like terms: 4x + -9x = -5x
12 + -5x = -3 + 9x + -9x

Combine like terms: 9x + -9x = 0
12 + -5x = -3 + 0
12 + -5x = -3

Add '-12' to each side of the equation.
12 + -12 + -5x = -3 + -12

Combine like terms: 12 + -12 = 0
0 + -5x = -3 + -12
-5x = -3 + -12

Combine like terms: -3 + -12 = -15
-5x = -15

Divide each side by '-5'.
x = 3

Simplifying
x = 3

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