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

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


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

Reorder the terms:
3(8 + x) + -1(x + -4) = 12
(8 * 3 + x * 3) + -1(x + -4) = 12
(24 + 3x) + -1(x + -4) = 12

Reorder the terms:
24 + 3x + -1(-4 + x) = 12
24 + 3x + (-4 * -1 + x * -1) = 12
24 + 3x + (4 + -1x) = 12

Reorder the terms:
24 + 4 + 3x + -1x = 12

Combine like terms: 24 + 4 = 28
28 + 3x + -1x = 12

Combine like terms: 3x + -1x = 2x
28 + 2x = 12

Solving
28 + 2x = 12

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + 2x = 12 + -28

Combine like terms: 28 + -28 = 0
0 + 2x = 12 + -28
2x = 12 + -28

Combine like terms: 12 + -28 = -16
2x = -16

Divide each side by '2'.
x = -8

Simplifying
x = -8

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