3x-12=4(x-4)-5

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Solution for 3x-12=4(x-4)-5 equation:


Simplifying
3x + -12 = 4(x + -4) + -5

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

Reorder the terms:
-12 + 3x = 4(-4 + x) + -5
-12 + 3x = (-4 * 4 + x * 4) + -5
-12 + 3x = (-16 + 4x) + -5

Reorder the terms:
-12 + 3x = -16 + -5 + 4x

Combine like terms: -16 + -5 = -21
-12 + 3x = -21 + 4x

Solving
-12 + 3x = -21 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-12 + 3x + -4x = -21 + 4x + -4x

Combine like terms: 3x + -4x = -1x
-12 + -1x = -21 + 4x + -4x

Combine like terms: 4x + -4x = 0
-12 + -1x = -21 + 0
-12 + -1x = -21

Add '12' to each side of the equation.
-12 + 12 + -1x = -21 + 12

Combine like terms: -12 + 12 = 0
0 + -1x = -21 + 12
-1x = -21 + 12

Combine like terms: -21 + 12 = -9
-1x = -9

Divide each side by '-1'.
x = 9

Simplifying
x = 9

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