12x+9=8x-1-4x

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Solution for 12x+9=8x-1-4x equation:


Simplifying
12x + 9 = 8x + -1 + -4x

Reorder the terms:
9 + 12x = 8x + -1 + -4x

Reorder the terms:
9 + 12x = -1 + 8x + -4x

Combine like terms: 8x + -4x = 4x
9 + 12x = -1 + 4x

Solving
9 + 12x = -1 + 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 = -1 + 4x + -4x

Combine like terms: 12x + -4x = 8x
9 + 8x = -1 + 4x + -4x

Combine like terms: 4x + -4x = 0
9 + 8x = -1 + 0
9 + 8x = -1

Add '-9' to each side of the equation.
9 + -9 + 8x = -1 + -9

Combine like terms: 9 + -9 = 0
0 + 8x = -1 + -9
8x = -1 + -9

Combine like terms: -1 + -9 = -10
8x = -10

Divide each side by '8'.
x = -1.25

Simplifying
x = -1.25

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