12x-7x+3.5=-9

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Solution for 12x-7x+3.5=-9 equation:


Simplifying
12x + -7x + 3.5 = -9

Reorder the terms:
3.5 + 12x + -7x = -9

Combine like terms: 12x + -7x = 5x
3.5 + 5x = -9

Solving
3.5 + 5x = -9

Solving for variable 'x'.

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

Add '-3.5' to each side of the equation.
3.5 + -3.5 + 5x = -9 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + 5x = -9 + -3.5
5x = -9 + -3.5

Combine like terms: -9 + -3.5 = -12.5
5x = -12.5

Divide each side by '5'.
x = -2.5

Simplifying
x = -2.5

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