-3(1+3x)=15

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Solution for -3(1+3x)=15 equation: 



-3(1+3x)=15

We move all terms to the left:

-3(1+3x)-(15)=0

We add all the numbers together, and all the variables

-3(3x+1)-15=0

We multiply parentheses

-9x-3-15=0

We add all the numbers together, and all the variables

-9x-18=0

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

-9x=18

x=18/-9

x=-2

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