-x+21=5x-9

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Solution for -x+21=5x-9 equation: 



-x+21=5x-9

We move all terms to the left:

-x+21-(5x-9)=0

We add all the numbers together, and all the variables

-1x-(5x-9)+21=0

We get rid of parentheses

-1x-5x+9+21=0

We add all the numbers together, and all the variables

-6x+30=0

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

-6x=-30

x=-30/-6

x=+5

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