12x+9=7x-3x-5

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Solution for 12x+9=7x-3x-5 equation:


Simplifying
12x + 9 = 7x + -3x + -5

Reorder the terms:
9 + 12x = 7x + -3x + -5

Reorder the terms:
9 + 12x = -5 + 7x + -3x

Combine like terms: 7x + -3x = 4x
9 + 12x = -5 + 4x

Solving
9 + 12x = -5 + 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.
9 + 12x + -4x = -5 + 4x + -4x

Combine like terms: 12x + -4x = 8x
9 + 8x = -5 + 4x + -4x

Combine like terms: 4x + -4x = 0
9 + 8x = -5 + 0
9 + 8x = -5

Add '-9' to each side of the equation.
9 + -9 + 8x = -5 + -9

Combine like terms: 9 + -9 = 0
0 + 8x = -5 + -9
8x = -5 + -9

Combine like terms: -5 + -9 = -14
8x = -14

Divide each side by '8'.
x = -1.75

Simplifying
x = -1.75

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