12=3x-(x+5)

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


Simplifying
12 = 3x + -1(x + 5)

Reorder the terms:
12 = 3x + -1(5 + x)
12 = 3x + (5 * -1 + x * -1)
12 = 3x + (-5 + -1x)

Reorder the terms:
12 = -5 + 3x + -1x

Combine like terms: 3x + -1x = 2x
12 = -5 + 2x

Solving
12 = -5 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
12 + -2x = -5 + 2x + -2x

Combine like terms: 2x + -2x = 0
12 + -2x = -5 + 0
12 + -2x = -5

Add '-12' to each side of the equation.
12 + -12 + -2x = -5 + -12

Combine like terms: 12 + -12 = 0
0 + -2x = -5 + -12
-2x = -5 + -12

Combine like terms: -5 + -12 = -17
-2x = -17

Divide each side by '-2'.
x = 8.5

Simplifying
x = 8.5

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