30x+(-90)=-390

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Solution for 30x+(-90)=-390 equation: 



30x+(-90)=-390

We move all terms to the left:

30x+(-90)-(-390)=0

We add all the numbers together, and all the variables

30x+300=0

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

30x=-300

x=-300/30

x=-10

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