-4=80-30x

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Solution for -4=80-30x equation: 



-4=80-30x

We move all terms to the left:

-4-(80-30x)=0

We add all the numbers together, and all the variables

-(-30x+80)-4=0

We get rid of parentheses

30x-80-4=0

We add all the numbers together, and all the variables

30x-84=0

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

30x=84

x=84/30

x=2+4/5

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