3x-12-1(x+4)=0

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Solution for 3x-12-1(x+4)=0 equation:


Simplifying
3x + -12 + -1(x + 4) = 0

Reorder the terms:
3x + -12 + -1(4 + x) = 0
3x + -12 + (4 * -1 + x * -1) = 0
3x + -12 + (-4 + -1x) = 0

Reorder the terms:
-12 + -4 + 3x + -1x = 0

Combine like terms: -12 + -4 = -16
-16 + 3x + -1x = 0

Combine like terms: 3x + -1x = 2x
-16 + 2x = 0

Solving
-16 + 2x = 0

Solving for variable 'x'.

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

Add '16' to each side of the equation.
-16 + 16 + 2x = 0 + 16

Combine like terms: -16 + 16 = 0
0 + 2x = 0 + 16
2x = 0 + 16

Combine like terms: 0 + 16 = 16
2x = 16

Divide each side by '2'.
x = 8

Simplifying
x = 8

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