x-4(x+9)=-15

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Solution for x-4(x+9)=-15 equation: 



x-4(x+9)=-15

We move all terms to the left:

x-4(x+9)-(-15)=0

We add all the numbers together, and all the variables

x-4(x+9)+15=0

We multiply parentheses

x-4x-36+15=0

We add all the numbers together, and all the variables

-3x-21=0

We move all terms containing x to the left, all other terms to the right

-3x=21

x=21/-3

x=-7

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