9-5-4=12-[(6x-4)+7]

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Solution for 9-5-4=12-[(6x-4)+7] equation:


Simplifying
9 + -5 + -4 = 12 + -1[(6x + -4) + 7]

Combine like terms: 9 + -5 = 4
4 + -4 = 12 + -1[(6x + -4) + 7]

Combine like terms: 4 + -4 = 0
0 = 12 + -1[(6x + -4) + 7]

Reorder the terms:
0 = 12 + -1[(-4 + 6x) + 7]

Remove parenthesis around (-4 + 6x)
0 = 12 + -1[-4 + 6x + 7]

Reorder the terms:
0 = 12 + -1[-4 + 7 + 6x]

Combine like terms: -4 + 7 = 3
0 = 12 + -1[3 + 6x]
0 = 12 + [3 * -1 + 6x * -1]
0 = 12 + [-3 + -6x]

Combine like terms: 12 + -3 = 9
0 = 9 + -6x

Solving
0 = 9 + -6x

Solving for variable 'x'.

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

Add '6x' to each side of the equation.
0 + 6x = 9 + -6x + 6x
Remove the zero:
6x = 9 + -6x + 6x

Combine like terms: -6x + 6x = 0
6x = 9 + 0
6x = 9

Divide each side by '6'.
x = 1.5

Simplifying
x = 1.5

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