30+(-x)=27

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Solution for 30+(-x)=27 equation: 



30+(-x)=27

We move all terms to the left:

30+(-x)-(27)=0

We add all the numbers together, and all the variables

(-1x)+30-27=0

We add all the numbers together, and all the variables

(-1x)+3=0

We get rid of parentheses

-1x+3=0

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

-x=-3

x=-3/-1

x=+3

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