(3x-1)-(8x-4)=-12

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Solution for (3x-1)-(8x-4)=-12 equation:


Simplifying
(3x + -1) + -1(8x + -4) = -12

Reorder the terms:
(-1 + 3x) + -1(8x + -4) = -12

Remove parenthesis around (-1 + 3x)
-1 + 3x + -1(8x + -4) = -12

Reorder the terms:
-1 + 3x + -1(-4 + 8x) = -12
-1 + 3x + (-4 * -1 + 8x * -1) = -12
-1 + 3x + (4 + -8x) = -12

Reorder the terms:
-1 + 4 + 3x + -8x = -12

Combine like terms: -1 + 4 = 3
3 + 3x + -8x = -12

Combine like terms: 3x + -8x = -5x
3 + -5x = -12

Solving
3 + -5x = -12

Solving for variable 'x'.

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

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

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

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

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

Simplifying
x = 3

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