3=x+3-5x-12

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


Simplifying
3 = x + 3 + -5x + -12

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

Combine like terms: 3 + -12 = -9
3 = -9 + x + -5x

Combine like terms: x + -5x = -4x
3 = -9 + -4x

Solving
3 = -9 + -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.
3 + 4x = -9 + -4x + 4x

Combine like terms: -4x + 4x = 0
3 + 4x = -9 + 0
3 + 4x = -9

Add '-3' to each side of the equation.
3 + -3 + 4x = -9 + -3

Combine like terms: 3 + -3 = 0
0 + 4x = -9 + -3
4x = -9 + -3

Combine like terms: -9 + -3 = -12
4x = -12

Divide each side by '4'.
x = -3

Simplifying
x = -3

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