8-9x=21x-1

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Solution for 8-9x=21x-1 equation: 



8-9x=21x-1

We move all terms to the left:

8-9x-(21x-1)=0

We get rid of parentheses

-9x-21x+1+8=0

We add all the numbers together, and all the variables

-30x+9=0

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

-30x=-9

x=-9/-30

x=3/10

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