30-5x=120

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Solution for 30-5x=120 equation: 



30-5x=120

We move all terms to the left:

30-5x-(120)=0

We add all the numbers together, and all the variables

-5x-90=0

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

-5x=90

x=90/-5

x=-18

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