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(9x-1)=(20+7)
We move all terms to the left:
(9x-1)-((20+7))=0
We add all the numbers together, and all the variables
(9x-1)-(27)=0
We add all the numbers together, and all the variables
(9x-1)-27=0
We get rid of parentheses
9x-1-27=0
We add all the numbers together, and all the variables
9x-28=0
We move all terms containing x to the left, all other terms to the right
9x=28
x=28/9
x=3+1/9
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