30=20-10x

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Solution for 30=20-10x equation: 



30=20-10x

We move all terms to the left:

30-(20-10x)=0

We add all the numbers together, and all the variables

-(-10x+20)+30=0

We get rid of parentheses

10x-20+30=0

We add all the numbers together, and all the variables

10x+10=0

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

10x=-10

x=-10/10

x=-1

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