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Express x in terms of y where -6*x-12*y=9

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Numerical solution:

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The solution

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-6*x - 12*y = 9
$$- 6 x - 12 y = 9$$
Detail solution
Given the linear equation:
-6*x-12*y = 9

Looking for similar summands in the left part:
-12*y - 6*x = 9

Move the summands with the other variables
from left part to right part, we given:
$$- 6 x = 12 y + 9$$
Divide both parts of the equation by -6
x = 9 + 12*y / (-6)

We get the answer: x = -3/2 - 2*y
Rapid solution [src]
x1 = -3/2 - 2*re(y) - 2*I*im(y)
$$x_{1} = - 2 \operatorname{re}{\left(y\right)} - 2 i \operatorname{im}{\left(y\right)} - \frac{3}{2}$$
x1 = -2*re(y) - 2*i*im(y) - 3/2