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Express x in terms of y where 9*x+15*y=-4

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Numerical solution:

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The solution

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9*x + 15*y = -4
$$9 x + 15 y = -4$$
Detail solution
Given the linear equation:
9*x+15*y = -4

Looking for similar summands in the left part:
9*x + 15*y = -4

Move the summands with the other variables
from left part to right part, we given:
$$9 x = - 15 y - 4$$
Divide both parts of the equation by 9
x = -4 - 15*y / (9)

We get the answer: x = -4/9 - 5*y/3
Rapid solution [src]
       4   5*re(y)   5*I*im(y)
x1 = - - - ------- - ---------
       9      3          3    
$$x_{1} = - \frac{5 \operatorname{re}{\left(y\right)}}{3} - \frac{5 i \operatorname{im}{\left(y\right)}}{3} - \frac{4}{9}$$
x1 = -5*re(y)/3 - 5*i*im(y)/3 - 4/9